Indicate which of the following situations involve descriptive statistics and wh
ID: 3132288 • Letter: I
Question
Indicate which of the following situations involve descriptive statistics and which involve inferential statistics: a. An annual stockholders’ report details the assets of the corporation. b. A history instructor tells his class the number of students who received an A on a recent exam. c. The mean of a sample set of scores is calculated to characterize the sample. d. The sample data from a poll are used to estimate the opinion of the population. e. A correlational study is conducted on a sample to determine whether educational level and income in the population are related. f. A newspaper article reports the average salaries of federal employees from data collected on all federal employees.
Explanation / Answer
a) It is a descriptive statistics. It shows past data (last year Annual data) of the cor[poration
b)It is also Descriptive for the same reason that it tells(explains) about the data (exam scores) .
c) Inferential Statistics . We are infering the sample from sample set.
d) Clearly Inferential. Infering opinion polls of the population from sample data.
e)Again Inferential: We are tring to infer whether there is a relationship between educational level and income of population.
f) Descriptive : Just describing the data collected from federal employee. Nothing infering from that data.