Description : Define discrete and continuous variable.
Last Answer : Ans: A variable which can assume only some specific values within a given range is called discrete variable. For e.g. Number of students in a class, Number of houses in a street, number of children in a family etc. ... at a place, income of a person, height of a plant, a life time of a T.V tube etc.
Description : Define Mode with examples.
Last Answer : Ans: Most repeated value of the given data is called mode for example if X=2, 2, 3, 4, 5, 5, 5, 6, 8, 10. In this data most repeated value is 5 so our mode will be 5.
Description : Define discrete variable by giving examples.
Last Answer : Ans: A variable which can assume only some specific values within a given range is called discrete variable. For e.g. Number of students in a class, Number of houses in a street, number of children in a family etc. it can’t occur in decimal.
Description : Statistics: Which test to use to find the relation between two binary variables adjusted for a continuous and two binary covariates? How do I check for covariates in the first place?
Last Answer : ~ Do you have an English translation Equation? Maybe the Quadratic Equation -b + – 4ac over 2a. Breathe in and breath out. when you relax the answer will come.
Description : Give three sources of secondary data.
Last Answer : Ans: i. Official Source ii. Research Organization iii. Technical, Trade, Journals and Newspaper
Description : Define Dependent Event.
Last Answer : Ans: If there are two events i.e. A in sample space 1 (S1) and B in sample space 2 (S2) and occurrence or non-occurrence of one event affects the occurrence and nonoccurrence of other event then it is called dependent event.
Description : Define Independent Event.
Last Answer : Ans: If there are two events i.e. A in sample space 1 (S1) and B in sample space 2 (S2) and occurrence or non-occurrence of one event does not affect the occurrence and non-occurrence of other event then it is called independent event.
Description : Define Equally Likely Event.
Last Answer : Ans: If two events A & B have equal chance of occurrence in sample space S then the event will be Equally Likely Event.
Description : Define Not-Mutually Exclusive events.
Last Answer : Ans: If two events A & B have some thing common in sample space S then the event will be Not-Mutually exclusive event.
Description : Define Mutually Exclusive events.
Last Answer : Ans: If two events A & B have nothing common in sample space S then the event will be mutually exclusive event.
Description : Define Impossible event.
Last Answer : Ans: An event of sample space contains none of the possible outcome is called impossible event and is denoted by Greek letter φ.
Description : Define possible event.
Last Answer : Ans: An event of sample space contains at least one possible outcome is called possible event.
Description : Define compound event.
Last Answer : Ans: An event of sample space contains at least two outcomes is called compound event these may be denoted by any letter A to Z.
Description : Define simple event.
Last Answer : Ans: An event of sample space contains only one outcome is called simple event.
Description : Define an event. What are its types?
Last Answer : Ans: A single result of an experiment or any desired sub set of the sample space is called and event and it may be denoted by any letter A to Z. it has two main types (1) Possible event & (2 ... (1) simple event (2) compound event and compound event has one more type which is sure or certain event.
Description : Define Sample Point.
Last Answer : Ans: The elements of the sample space or possible outcome of a given random experiment is called sample point.
Description : Define Sample Space or possible outcomes.
Last Answer : Ans: All possible outcomes of an experiment are called sample space and is denoted by “S” i.e. in toss of coin the sample space will be two (Head & Tail) & in throwing a die it will be 6 (1, 2, 3, 4, 5, 6)
Description : Define Probability.
Last Answer : Ans: Probability is the measurement of uncertainty which consists on occurrence or non-occurrence of an event.
Description : Define an experiment/random experiment/trial?
Last Answer : Ans: In probability, experiment or trial is simply an action in which the result is uncertain or simply uncertain situation in statistics is called Random Experiment (R.E).
Description : Define price relative.
Last Answer : Ans: Price in current year divided by price of base year and multiplied by 100 is simply called price relative.
Description : Define link relative.
Last Answer : Ans: Price of current period divided by price of immediate previous period multiplied by 100 is called link relative.
Description : Define Unweighted index number
Last Answer : Ans: Unweighted index number is an index in which weights are not assigned to an index.
Description : Define weighted index number
Last Answer : Ans: Weighted index number is an index in which weights are assigned to that index.
Description : Define Chain Base method.
Last Answer : Ans: In this method index number is computed in two steps. As a first step, we calculate link relative by dividing current period price/quantity/value by price/quantity/value of immediate ... relative by link relative of immediate previous period of current period and divide this product by 100.
Description : Define Arithmetic Mean.
Last Answer : Ans: It is the most commonly used average or measure of the central tendency applicable only in case of quantitative data. Arithmetic mean is also simply called “mean”. Arithmetic mean is defined as: “Arithmetic mean is quotient of sum of the given values and number of the given values”.
Description : Define cumulative frequency distribution.
Last Answer : Ans: A table showing the cumulative frequency distribution is called the cumulative frequency distribution or a cumulative frequency distribution is a summary of a set of data showing the frequency (or number) of items less than or equal to the upper class limit of each class.
Description : Define Histogram.
Last Answer : Ans: Histogram is a set of adjacent rectangles in which area of each rectangle is proportional to the corresponding class frequency and class size.
Description : Define class mark.
Last Answer : Ans: The class marks or mid point is the mean of lower and upper class limits or boundaries. So it divides the class into two equal parts. It is obtained by dividing the sum of lower and upper class limit or class ... . For Example: The class mark or mid point of the class 60 - 69 is 60 69/2 = 64.5
Description : Define class interval.
Last Answer : Ans: The difference between the upper and lower class boundaries (not between class limits) of a class or the difference between two successive mid points is called size of class interval.
Description : Define class limits.
Last Answer : Ans: The variant values of the classes or groups are called the class limits. The smaller value of the class is called lower class limit and larger value of the class is called upper class limit. ... 19, the smaller value 10 is lower class limit and larger value 19 is called upper class limit.
Description : Define tabulation.
Last Answer : Ans: The process of placing classified data into tabular form is known as tabulation. A table is a symmetric arrangement of statistical data in rows and columns. Rows are horizontal arrangements ... vertical arrangements. It may be simple, double or complex depending upon the type of classification.
Description : Define attribute by giving example.
Last Answer : Ans: Attribute represents the quality or character. For example color of eyes, type of mangoes, beauty etc.
Description : Define population and sample.
Last Answer : Ans: Total group under discussion is called population. For example height of all class students. A part of population which represents the population is called sample.
Description : Define Statistics in your own words.
Last Answer : Ans: Statistics is the science which deals with data. After collection & organization of data, it is further analyzed statistically and interpreted. It is the science of average, counting & probability.
Description : Using the data in question 7, calculate number of observations that are two or more sample standard deviations from the sample mean. a. 0 b. 1 c. 2 d. 3
Last Answer : a. 0
Description : Where can i find data on the most popular iphone apps? # of times downloaded, etc?
Last Answer : answer:Apple manages a list of the most popular apps on the iTunes Store main page. I don’t know if you’ll be able to get numbers, though…
Description : What are the different type of charts used in presenting a statistical data?
Last Answer : 1. Simple Bar Chart 2. Multiple Bar Chart or Cluster Chart 3. Staked Bar Chart or Sub-Divided Bar Chart or Component Bar Chart Simple Component Bar Chart Percentage Component Bar Chart Sub-Divided Rectangular Bar Chart Pie Chart
Description : What is meant by grouped data?
Last Answer : Ans: Data presented in the form of frequency distribution is called grouped data.
Description : Why editing of data is necessary?
Last Answer : Ans: Statistical analysis will be productive only when data will be error free so editing of data makes data error free.
Description : Describe editing of data.
Last Answer : Ans: Editing of data means modifying, changing and correcting of data. It may does for correction of data errors.
Description : Name the methods for collecting primary data.
Last Answer : Ans: i. Direct Personal Investigation ii. Indirect Investigation iii. Local Source iv. Questionnaire Method v. Registration vi. Questionnaire by Post vii. By Enumerators viii. By Telephone ix. Through Internet
Description : Differentiate primary data from secondary data.
Last Answer : Ans: Most original first hand collected data is called primary data or the data without any statistical analysis is called primary data. The data which has already collected and statistically analysed by someone is called secondary data.
Description : Note major sources for collecting secondary data.
Last Answer : Ans: i. Official Source ii. Semi – Official Source iii. Private Source iv. Research Organization v. Technical, Trade, Journals and Newspaper
Description : What is secondary data?
Last Answer : Ans: The data which has already collected and statistically analyzed by someone is called secondary data. The data given in your book and all grouped data is called secondary data.
Description : What is primary data?
Last Answer : Ans: Most original first hand collected data is called primary data or the data without any statistical analysis is called primary data.
Description : What is data?
Last Answer : Ans: A set of values or number of values is called data.
Description : Using the data from 16, calculate the correlation coefficient. a. r = 0.490 b. r = 0.985 c. r = 0.971 d. r = 0.240
Last Answer : b. r = 0.985
Description : Given the following data pairs (x, y), find the regression equation. (1, 1.24), (2, 5.23), (3, 7.24), (4, 7.60), (5, 9.97), (6, 14.31), (7, 13.99), (8, 14.88), (9, 18.04), (10, 20.70) a. y = 0.490 x - 0.053 b. y = 2.04 x c. y = 1.98 x + 0.436 d. y = 0.49 x
Last Answer : c. y = 1.98 x + 0.436
Description : Using the data in question 7, calculate the 95% confidence interval for the mean ACT score based on the t-distribution. a. -∞ to 23.05 b. -∞ to 23.15 c. 18.07 to 23.63 d. 18.22 to 23.48
Last Answer : c. 18.07 to 23.63
Description : Can you give me a sample question of a College Statistics Class?
Last Answer : Select several of these choices and see the answers and discussions.