STATISTICS

1. The class- mark of the class 100-120 is

a. 100 b. 110 c. 115 d. 120

2. The class- mark of the class 130-150 is

a. 130 b. 135 c. 145 d. 140

3. Given below is a bar graph showing the heights of six mountain peaks :

Read the above diagram and answer the following questions:

a. Which is the highest peak and what is its height?

b. Write the ratio of the height of the highest peak and lowest peak.

c. Write the heights of the given peaks in ascending order.

d. Which peak is the second highest and what is its height?

4. The following table gives the distribution of students of two sections according to the

marks obtained by them:

Represent the marks of the students of both the sections on the same graph by two

frequency polygons.

5. The following table gives the life times of 400 neon lamps:

a. Represent the given information with the help of a histogram.

b. How many lamps have a lifetime of more than 700 hours?

6. A random survey of the number of children of various age groups playing in a park was

found as follows:

Draw a histogram to represent the data above.