Chapter 2 Introduction to Statistics Types of Graphs and Charts

Using the line of best fit. If a student had a height of 146 cm, the estimated handspan will be 17 cm. True or False?

• True

• False

The chart shows the cost and length of some plumbing jobs. Estimate the cost of job lasting 3.5 hours.

• £150

• £180

• £210

• £240

What is a line of best fit used for?

• To make predictions

• To connect the points

• To make the graph look pretty

• To make it look like you know what you are doing

The scatterplot below suggests which of the following types of data relationship?

• Weak and Negative

• Weak and Positive

• Strong and Negative

• Strong and Positive

The scatter graph shows the relationship between the age of a car and its value.

Describe the correlation shown on the diagram.

• Positive

• Negative

• No Correlation

The scatter graph shows the relationship between the two test scores of some students.

One student missed Test 1 and scored 90 marks on Test 2. Use the graph to estimate their result for Test 1.

• 60

• 90

• 120

• 160

What type of correlation is shown?

(a)  

• 92

• 90

• 83

• 71

• 7

• 2

• 3

• 4

• The mode is the best measure of central tendency for the data

• The data has two outliers

• The median is 53

• The range is 120