Range, and Standard Deviation?

Range, and Standard Deviation?
by

1 Answer

Related questions

What type of measures are the range and the standard deviation?

Description : What type of measures are the range and the standard deviation?

Last Answer : They are measures of the spread of data.

Which measures the systematic or non -systematic risk of a security ? a. Beta c. standard deviation b. Variance d. Range

Description : Which measures the systematic or non -systematic risk of a security ? a. Beta c. standard deviation b. Variance d. Range

Last Answer : Answer :a

In a large random data set following normal distribution, the ratio (%) of number of data points which are in the range of (mean ± standard deviation) to the total number of data points, is (A) ~ 50% (B) ~ 67% (C) ~ 97% (D) ~ 47%

Description : In a large random data set following normal distribution, the ratio (%) of number of data points which are in the range of (mean ± standard deviation) to the total number of data points, is (A) ~ 50% (B) ~ 67% (C) ~ 97% (D) ~ 47%

Last Answer : Answer: B

Compare narrow band FM with wide-band FM w.r.t. following points. (i) Modulation index (ii) Maximum deviation (iii)Range of modulating frequency (iv)Application

Description : Compare narrow band FM with wide-band FM w.r.t. following points. (i) Modulation index (ii) Maximum deviation (iii)Range of modulating frequency (iv)Application

Last Answer : Sr. No Parameters Narrow band FM Wide band FM 1 Modulation index Less than or slightly greater than 1 Greater than 1  2 Maximum deviation ... like police wireless, ambulance etc. Entertainment broadcasting can be used for high quality music transmission 

What does standard deviation result mean?

Description : What does standard deviation result mean?

Last Answer : It shows you how dispersed the results are.

Standard deviation and mean?

Description : Standard deviation and mean?

Last Answer : It is very handy to just memorize the 68 – 95 – 99.7 rule. It means 68% of the population is within +/-1 SD, 95% are within 2 SD and 99.7 are within 3 SD.

Statistics question. Finding the standard deviation for these numbers: 1, 2, 98, 100, 105.

Description : Statistics question. Finding the standard deviation for these numbers: 1, 2, 98, 100, 105.

Last Answer : Hint: There aren’t going to be any trick questions in statistics. There is enough information to calculate the standard deviation.

How to understand this Standard Deviation question?

Description : How to understand this Standard Deviation question?

Last Answer : So, this question is related to the definition of standard deviation, rather then having to calculate it. I refer you to wikipedia, which has a decent write-up. Specifically the rules for normally distributed data ... the math there is too high-level, just take a good look at the plot on the right.

How do I find the mean and standard deviation from a frequency table?

Description : How do I find the mean and standard deviation from a frequency table?

Last Answer : Do you have a graphing calculator?

How to compute mean and standard deviation for each column of a pandas dataframe -Web-Development

Description : How to compute mean and standard deviation for each column of a pandas dataframe -Web-Development

Last Answer : answer:

What is the standard deviation ?

Description : What is the standard deviation ?

Last Answer : Ideal deviation is a statistical method of measuring business risk.

What is the standard deviation of the following data set rounded to the nearest tenth 52.1 45.5 51 48.8 43.6?

Description : What is the standard deviation of the following data set rounded to the nearest tenth 52.1 45.5 51 48.8 43.6?

Last Answer : Feel Free to Answer

In the Empirical Rule of data will fall in with two standard deviation.?

Description : In the Empirical Rule of data will fall in with two standard deviation.?

Last Answer : Approx 95% of the observations.

In the Empirical Rule of data will fall in with two standard deviation.?

Description : In the Empirical Rule of data will fall in with two standard deviation.?

Last Answer : Approx 95% of the observations.

What is the standard deviation and what is the probability that a student scored higher than 322 if the mean test score is 312 and 16 percent of the scores are under 307?

Description : What is the standard deviation and what is the probability that a student scored higher than 322 if the mean test score is 312 and 16 percent of the scores are under 307?

Last Answer : Assuming a normal distribution:If 16% are less than 307, then 84% are greater than 307.Using single tailed normal tables we want the z value whichgives 84%-50% = 34% = 0.34 to the left of the mean; this is z ≈ ... 1 - 0.977 = 0.023 = 2.3 % are greater than 322→ probability greater than 322 is 2.3%

What is the qualifying time for the fastest 5 percent of all runners if the average finishing time is 5 minutes 17 seconds with standard deviation of 12 seconds?

Description : What is the qualifying time for the fastest 5 percent of all runners if the average finishing time is 5 minutes 17 seconds with standard deviation of 12 seconds?

Last Answer : Assuming a normal distribution:For the fastest 5% we need to find the z value which gives 100%- 5% = 95% of the area under the normal curve (from -∞).Using single tailed tables, we need the z value which gives 95%- 50% ... deviation≈ 5 min 17 sec + 1.645 12 sec≈ 5 min 17 sec + 20 s= 5 min 37 sec

How many of scores will be within 1 standard deviation of the population mean?

Description : How many of scores will be within 1 standard deviation of the population mean?

Last Answer : Assuming a normal distribution 68 % of the data samples will bewith 1 standard deviation of the mean.

What is the standard deviation if P 0.2 and n 400?

Description : What is the standard deviation if P 0.2 and n 400?

Last Answer : The answer depends on what the distribution is!

In which of the following towns does the LMT (Local Meridian Time) show the greatest deviation from the 1ST (Indian Standard Time) ? [NDA 1991] (a) Delhi (b) Cochin (c) Mumbai (d) Kohima

Description : In which of the following towns does the LMT (Local Meridian Time) show the greatest deviation from the 1ST (Indian Standard Time) ? [NDA 1991] (a) Delhi (b) Cochin (c) Mumbai (d) Kohima

Last Answer : Ans: (d)

The standard deviation of the variation in the transmission loss of a circuit should not exceed A. 3 dB B. 1 dB C. 5 dB D. 0.5dB

Description : The standard deviation of the variation in the transmission loss of a circuit should not exceed A. 3 dB B. 1 dB C. 5 dB D. 0.5dB

Last Answer : B. 1 dB

Political unrest, budget overruns, size and complexity of the project Answer: B (8)Decision trees are best used for : 1. Determining the interaction of the amount at stake and the expected value 2. Association of the probabilities with the risk events 3. An illustration of how to see the interactions between decisions and the associated events 4. A flow chart which determines the standard deviation of the risk event

Description : Political unrest, budget overruns, size and complexity of the project  Answer: B  (8)Decision trees are best used for : 1. Determining the interaction of the amount at stake and the expected ... and the associated events  4. A flow chart which determines the standard deviation of the risk event

Last Answer : 3. An illustration of how to see the interactions between decisions and the associated events

The square of standard deviation is (A) Coefficient of variance (B) Standard deviation (C)Variance (D) Mean deviation

Description : The square of standard deviation is (A) Coefficient of variance (B) Standard deviation (C)Variance (D) Mean deviation

Last Answer : (C)Variance

method requires the following data pertaining annual flood series (i) Mean value (ii) Standard deviation (iii) Length of record (iv) Coefficient of skew The correct answer is (A) (i) and (ii) (B) (i),(i) and (iii) (C) (i), (ii) and (iv) (D) (i), (ii), (iii) and (iv)

Description : method requires the following data pertaining annual flood series (i) Mean value (ii) Standard deviation (iii) Length of record (iv) Coefficient of skew The correct answer is (A) (i) and (ii) (B) (i),(i) and (iii) (C) (i), (ii) and (iv) (D) (i), (ii), (iii) and (iv)

Last Answer : Answer: Option B

If the expected time for completion of a project is 10 days with a standard deviation of 2 days, the expected time of completion of the project with 99.9% probability is (A) 4 days (B) 6 days (C) 10 days (D) 16 day

Description : If the expected time for completion of a project is 10 days with a standard deviation of 2 days, the expected time of completion of the project with 99.9% probability is (A) 4 days (B) 6 days (C) 10 days (D) 16 day

Last Answer : (D) 16 days

If the expected time of completion of a project is 60 weeks with a standard deviation of 5 weeks, the probability of completing the project in 50 weeks and 65 weeks respectively will be (A) 2.3% and 84.1% (B) 97.7% and 84.1% (C) 97.7 % and 15.9% (D) 15.9% and 97.7%

Description : If the expected time of completion of a project is 60 weeks with a standard deviation of 5 weeks, the probability of completing the project in 50 weeks and 65 weeks respectively will be (A) 2.3% and 84.1% (B) 97.7% and 84.1% (C) 97.7 % and 15.9% (D) 15.9% and 97.7%

Last Answer : (A) 2.3% and 84.1%

If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is (A) 10 % (B) 12.5 % (C) 15 % (D) 18.5%

Description : If the average compressive strength is 4000 kg/cm2 and standard deviation is 500, the co-efficient of variation is (A) 10 % (B) 12.5 % (C) 15 % (D) 18.5%

Last Answer : Answer: Option B

86. To apply Shewhart-cusum combined procedure, the Shewhart control limits should be applied almost standard deviation from the center. a) 2 b) 1 c) 1.5 d) 3.5

Description : 86. To apply Shewhart-cusum combined procedure, the Shewhart control limits should be applied almost standard deviation from the center. a) 2 b) 1 c) 1.5 d) 3.5

Last Answer : 2

As per IS: 456-2000, recommended value for standard deviation for concrete mix from M30 to M50 is [ A ] 1 N/mm2 [ B ] 2 N/mm2 [ C ] 4 N/mm2 [ D ] 5 N/mm2

Description : As per IS: 456-2000, recommended value for standard deviation for concrete mix from M30 to M50 is [ A ] 1 N/mm2 [ B ] 2 N/mm2 [ C ] 4 N/mm2 [ D ] 5 N/mm2

Last Answer : [ D ] 5 N/mm2

As per IS:456, the strength of concrete sample is less than [ A ] The characteristic strength minus 1.35times the standard deviation [ B ] 0.80 times the characteristic strength [ C ] Greater of (a) and (b) [ D ] None of the above

Description : As per IS:456, the strength of concrete sample is less than [ A ] The characteristic strength minus 1.35times the standard deviation [ B ] 0.80 times the characteristic strength [ C ] Greater of (a) and (b) [ D ] None of the above

Last Answer : [ C ] Greater of (a) and (b)

_________ is a measure of risk-adjusted return a. Simple return b. Standard Deviation c. Beta d. Sharpe Ratio ANS: Sharpe Ratio

Description : _________ is a measure of risk-adjusted return a. Simple return b. Standard Deviation c. Beta d. Sharpe Ratio ANS: Sharpe Ratio

Last Answer : ANS: Sharpe Ratio

The results for accuracy studies in Analytical Method Validation, are expressed in terms of? A. % Relative error B. Correlation coefficient C. Relative standard deviation D. Mean

Description : The results for accuracy studies in Analytical Method Validation, are expressed in terms of? A. % Relative error B. Correlation coefficient C. Relative standard deviation D. Mean

Last Answer : A. % Relative error

A measure of risk per unit of expected return A.standard deviation B . Coefficient of variation C.Correlation coefficient D. Beta

Description : A measure of risk per unit of expected return A.standard deviation B . Coefficient of variation C.Correlation coefficient D. Beta 

Last Answer : Answer: B 

The distribution of heights of American women aged 18 to 24 is approximately normally distributed with a mean of 65.5 inches and standard deviation of 2.5 inches. Calculate the z-score for a woman six feet tall. a. 2.60 b. 4.11 c. 1.04 d. 1.33

Description : The distribution of heights of American women aged 18 to 24 is approximately normally distributed with a mean of 65.5 inches and standard deviation of 2.5 inches. Calculate the z-score for a woman six feet tall. a. 2.60 b. 4.11 c. 1.04 d. 1.33

Last Answer : a. 2.60

Provided that the ACT is reasonably normally distributed with a mean of 18 and standard deviation of 6, determine the proportion of students with a 33 or higher. a. 0.0062 b. 0.0109 c. 0.0124 d. 0.0217

Description : Provided that the ACT is reasonably normally distributed with a mean of 18 and standard deviation of 6, determine the proportion of students with a 33 or higher. a. 0.0062 b. 0.0109 c. 0.0124 d. 0.0217

Last Answer : a. 0.0062

A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Description : A national random sample of 20 ACT scores from 2010 is listed below. Calculate the sample mean and standard deviation. 29, 26, 13, 23, 23, 25, 17, 22, 17, 19, 12, 26, 30, 30, 18, 14, 12, 26, 17, 18 a. 20.50, 5.79 b. 20.50, 5.94 c. 20.85, 5.79 d. 20.85, 5.94

Last Answer : Katie earned 84,92,84,75 and 70 on her first 5 tests. What is the minimum grade Katie needs to earn on the next test to have a mean of 84?

Given IQ scores are approximately normally distributed with a mean of 100 and standard deviation of 15, the proportion of people with IQs above 130 is: a. 95% b. 68% c. 5% d. 2.5%

Description : Given IQ scores are approximately normally distributed with a mean of 100 and standard deviation of 15, the proportion of people with IQs above 130 is: a. 95% b. 68% c. 5% d. 2.5%

Last Answer : d. 2.5%

Is it possible to solve a magic square made up of a system of unknown symbols?

Description : Is it possible to solve a magic square made up of a system of unknown symbols?

Last Answer : No. I could populate a 9×9 magic square with the letters A through I. You would never figure out what numbers were represented by the letters because a 9×9 magic square is not unique.

Did we invent math,or did we discover it?

Description : Did we invent math,or did we discover it?

Last Answer : God invented it.

How many of you can pass this simple test?

Description : How many of you can pass this simple test?

Last Answer : I can.

How can two infinite sets not have one to one correspondence with each other?

Description : How can two infinite sets not have one to one correspondence with each other?

Last Answer : You've missed what an infinite set means. Consider this definition: Infinite sets are the sets containing an uncountable or infinite number of elements. Infinite sets are also called uncountable sets. That is ... . Or for the set of all positive integers and the set of all negative integers .

Using the rays in the diagram, how many different acute angles can be formed?

Description : Using the rays in the diagram, how many different acute angles can be formed?

Last Answer : We don’t do your homework, but this is a simple combinatorics problem. Any pair of those rays will form an acute angle. How many pairs are there?

Can someone help me with my math assignment?

Description : Can someone help me with my math assignment?

Last Answer : We don't do people's homework here, but we can help in other ways. For instance, some of us can suggest an approach. One would hope, though, that your instructor has already prepared you to ... you take your shot at answering the question, and then post your answer and ask if others will comment?

What’s 0.222222222... as a simplified fraction?

Description : What’s 0.222222222... as a simplified fraction?

Last Answer : 2/9

If somebody choose two digit and three digit numbers and their difference is 989.What will be their sum? a) 1000 b)1010 c) 1006?

Description : If somebody choose two digit and three digit numbers and their difference is 989.What will be their sum? a) 1000 b)1010 c) 1006?

Last Answer : None of the above. Let x be the three digit number and y be the two digit number. x - y =989. x = 989 + y. x is obviously greater than 989 and less than 1000 (since it is three digits). Since y is a two digit number ... 989 + 10 = 999. We can't go any higher, so x =999 and y=10. x+y = 999+10 = 1009

What do you think of this YouTube video on why you can't divide by zero?

Description : What do you think of this YouTube video on why you can't divide by zero?

Last Answer : Also are the symbols for Eternity and infinity the same? ∞

Have you ever forgotten something that you didn't think you ever COULD forget?

Description : Have you ever forgotten something that you didn't think you ever COULD forget?

Last Answer : I still forget my neighbours name. I have known her for 3 years. I forgotten the quadric equation. I remember some math mnemonics but had to look up SOHCAHTOA and roy'g'biv to answer this question. I ... simple things every now and again , and have to look them up online , Fluther , or call family.

How many miles will a person run during a 10 kilometer race?

Description : How many miles will a person run during a 10 kilometer race?

Last Answer : What kind of mile? There are many.

A magazine company conducted a phone survey asking subscribers to identify the brand of outdoor camping equipment they like best. Every subscriber was surveyed, and the results were printed in an article titled “Most Popular Equipment among All Campers.” Why is the title of the article misleading?

Description : A magazine company conducted a phone survey asking subscribers to identify the brand of outdoor camping equipment they like best. Every subscriber was surveyed, and the results were printed in an article titled “Most Popular Equipment among All Campers.” Why is the title of the article misleading?

Last Answer : For view, of course. Edit: ok, now I confused. Are you asking what makes the title misleading, or why the magazine makes the misleading title?

Is there a calculation in which infinities cancels out?

Description : Is there a calculation in which infinities cancels out?

Last Answer : There are many asymptotic functions that are expressed as the x or y value approaches infinity. They are not at all uncommon. And the ratio of two such functions would define something like a line. Students of Analytic Geometry as well as Calculus are quite familiar with the occurrence of infinity.

Why do polls say that they are accurate + - 3.00% of the time 19/20?

Description : Why do polls say that they are accurate + - 3.00% of the time 19/20?

Last Answer : Maybe it should be + – 3.05%