In each of the following statements, determine whether the branch of statistics is best classified as...
In each of the following statements, determine whether the branch of statistics is best classified as descriptive statistics or inferential statistics.
A. The average of a data set is equal to 35.7.
B. The minimum value of a data set is 78, and the maximum value is 146.
C. Since the average age in a sample is 23, it is likely that the average age in the population is about 23.
D. Since the values in the sample are so widely dispersed, the spread of the population must be high.
Homework Answers
Answer
we know that descriptive statistics helps us to give information about the selected data whereas inferential statistics helps us to give conclusion about population based on the sample data.
(A) it is descriptive statistics because no conclusion is based on sample data for population. It is simply description of the sample data.
(B)it is descriptive statistics because no conclusion is based on sample data for population. It is simply description of the sample data.
(c) it is inferential statistics because sample data is used to make some conclusion, i.e. sample average is used to make conclusion about population average
(d)it is inferential statistics because sample data is used to make some conclusion, i.e. sample dispersion is used to make conclusion about population spread.
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