Test 1

Question 1

Statistics

Answer 1

Statistics is a mathematical science pertaining to the collection, analysis, interpretation or explanation, and presentation of data. It is applicable to a wide variety of academic disciplines, from the physical and social sciences to the humanities. Statistics are also used for making informed decisions.

Question 2

Population

Answer 2

All members of a specified group.

Question 3

Sample

Answer 3

A subset of a population.

Question 4

Descriptive statistics

Answer 4

Descriptive statistics are used to describe the basic characteristics of the data in a study. They provide simple summaries about the sample being measured. They can be expressed in numerical and/or graphical form. They form the basis of virtually every quantitative analysis of data.

Question 5

Inferential statistics

Answer 5

Inferential statistics are used to draw conclusions about a population based on information contained in a sample. Information is obtained from a sample and generalized to a population. In this category of statistics, conclusions are made with incomplete information.

Question 6

Parameter

Answer 6

A value, or quantity, that represents a characteristic of a population such as the population mean or standard deviation.

Question 7

Statistic

Answer 7

A value, or quantity, that represents a characteristic of a sample such as the sample mean or standard deviation.