Chapter 8 : Data description and analysis

Question 1

Bar chart

Answer 1

A chart with bars where one of the two axes represents a categorical variable

Question 2

Correlation

Answer 2

A tendency for the scores of one variable to be systematically related to the scores of another variable

Question 3

Correlation coefficient

Answer 3

A coefficient ranging from 0 to 1 and taking positive or negative values to indicate the strength of the relationship between two variables

Question 4

Descriptive statistics

Answer 4

Mathematical techniques for summarizing and organizing groups of numbers

Question 5

Graph/Chart

Answer 5

A graphic representation of data

Question 6

Histogram

Answer 6

A chart with bars where both axes represent continuous numerical variables

Question 7

Inferential statistics

Answer 7

Techniques for drawing conclusions (making inferences) about a wider population from the data set

Question 8

Run chart

Answer 8

A diagram composed of one or more jagged lines

Question 9

Scatterplot or scattergram

Answer 9

A graph which shows the relationship between two variables by plotting corresponding values of each variable, one horizontally and the other vertically, with each point (individual) showing separately

Question 10

Statistical significant

Answer 10

A result which is unlikely to have occurred by chance according to some pre-established criterion, usually a probability of less than .05

Question 11

To plot a chart

Answer 11

To draw a chart from data set