Select Board & Class

Login

Statistics

Question 9:

The following table gives the literacy rate (in percentage) of 35 cities. Find the mean literacy rate.

Literacy rate (in %)

45 − 55

55 − 65

65 − 75

75 − 85

85 − 95

Number of cities

3

10

11

8

3

Answer:

To find the class marks, the following relation is used.

Class size (h) for this data = 10

Taking 70 as assumed mean (a), di, ui, and fiui are calculated as follows.

Literacy rate (in %)

Number of cities

fi

xi

di = xi − 70

...

To view the solution to this question please

What are you looking for?

Syllabus