Statistics / Grade 9

Front

A set of drivers were asked about the number of accidents made in one year. Their answers were abbreviated in the following table:
The total number of surveyed drivers is:

Back

20

Front

The number of drivers that made no accidents is: 0, 3, 5, 7

Back

7

Front

A set of drivers were asked about the number of accidents made in one year. Their answers were abbreviated in the following table:
The percentage of drivers who made 4 accidents is: 4%, 20%, 25%, 60%

Back

20%

Front

Mean (average) number of accidents performed by a driver based on a survey.

Back

1.5

Front

Central angle for frequency 5 in a population of 25

Back

Front

The five grades of a student over 20 are: 10 ; 12 ; 13 ; 16 and 19. The average grade is:

Back

14

Front

The statistical data can be represented by: Frequency bar graph, Pie graph, Increasing cumulative frequency polygon, All choices

Back

All choices

Front

The adjacent graphic represents the cumulative frequency polygon of the students' grades in a certain class. What is the number of the students of this class?

Back

24

Front

The adjacent graphic represents the cumulative frequency polygon of the students' grades in a certain class.
How many students got a grade 8?

Back

3, 3

Front

The adjacent graphic represents the cumulative frequency polygon of the students' grades in a certain class.
How many student got a grade 9?

Back

2, 2