Stats Before Midterm

Question 1

Descriptive Statistics

Answer 1

Use numerical and/or graphical methods to explore data ie, to look for patterns in the data set, to summarize the information revealed in the data set, and to present the information in a convenient form.

Question 2

Inferential Statistics

Answer 2

utilizes sample data to make estimates, decisions, predictions, or other generalizations about a larger set of data

Question 3

Statistics

Answer 3

The science that deals with collection, classification, analysis, and interpretation of information or data

Question 4

Quantitative data

Answer 4

Are measurements that are recorded on a naturally occurring numerical scale

Question 5

Qualitative data

Answer 5

cannot be measured on a numerical scale; they can only be classified into categories

Question 6

Population

Answer 6

Is a set of units​ (usually people,​ objects, transactions, or​ events) of interest to a study.

Question 7

Variable

Answer 7

Is a characteristic or property of an individual experiment unit

Question 8

Sample

Answer 8

Is a subset of units of a population

Question 9

Statistical Inference

Answer 9

An estimate or prediction or some other generalization about a population based on information contained in sample

Question 10

Measure of Reliability

Answer 10

A measure of reliability is a statement about the degree of uncertainty associated with statistical inference

Question 11

Two Methods to Describe Data

Answer 11

Graphical and Numerical

Question 12

Nominal

Answer 12

Just a name (Qualitative)

Question 13

Class

Answer 13

One of the categories into which qualitative data can be classified

Question 14

Class frequency

Answer 14

The number of observations in the data set falling into a particular class

Question 15

Where are the variables located on Excel

Answer 15

On the top row