Exercise 2A - Exam style practice

A survey asked respondents to state their occupation. The type of data of this variable is

• discrete numerical

• continuous numerical

• categorical

• continuous categorical

A group of employees from a large company was asked about the importance to them of the amount that they earned in the job. A percentage bar chart of their responses is given below.

     Which of the following statements is correct?

• For most employees the amount earned is ‘Very Important’.

• The mode of the distribution is ‘Important’.

• The mode of the distribution is ‘Very Important’.

• The median of the distribution is ‘Important’.

The variables recovery time after exercise (in minutes) and fitness level (below average, average,

above average) are

• both numerical

• both categorical

• a numerical variable and a nominal variable respectively.

• a numerical variable and an ordinal variable respectively.

According to the bar chart, the percentage of

the 214 days on which the wind direction was

observed to be east or south-east is closest to

• 10%

• 16%

• 25%

• 33%

• 35%

How many numerical variables are listed in the table

• 15

• 3

• 4

• 60