In question, fill in the blanks to make the statements true.

Histogram given on the right shows the number of people owning the different number of books.

The total number of people surveyed is __________.

In question, fill in the blanks to make the statements true.

The difference between the upper and lower limit of a class interval is called the __________ of the class interval.

In question, fill in the blanks to make the statements true.

The sixth class interval for a grouped data whose first two class intervals are 10 – 15 and 15 – 20 is __________.

In question, fill in the blanks to make the statements true.

Histogram given on the right shows the number of people owning the different number of books.

The number of people owning books more than 60 is __________.

In question, fill in the blanks to make the statements true.

Histogram given on the right shows the number of people owning the different number of books.

The number of people owning books less than 40 is __________.