Secondary School (English Medium) (5 to 8) कक्षा ८ - CBSE Question Bank Solutions

Using the following frequency table.

9 students got full marks.

Using the following frequency table.

The frequency of less than 8 marks is 29.

Using the following frequency table.

The frequency of more than 8 marks is 21.

Using the following frequency table.

10 marks the highest frequency.

If the fifth class interval is 60 – 65, fourth class interval is 55 – 60, then the first-class interval is 45 – 50.

From the histogram given on the right, we can say that 1500 males above the age of 20 are literate.

The class size of the class interval 60 – 68 is 8.

The following pictorial representation of data is a histogram.

Given below is a frequency distribution table. Read it and answer the questions that follow:

1. What is the lower limit of the second class interval?
2. What is the upper limit of the last class interval?
3. What is the frequency of the third class?
4. Which interval has a frequency of 10?
5. Which interval has the lowest frequency?
6. What is the class size?

The top speeds of thirty different land animals have been organised into a frequency table. Draw a histogram for the given data.

Look at the histogram below and answer the questions that follow.

1. How many students have height more than or equal to 135 cm but less than 150 cm?
2. Which class interval has the least number of students?
3. What is the class size?
4. How many students have height less than 140 cm?

Following are the number of members in 25 families of a village:

6, 8, 7, 7, 6, 5, 3, 2, 5, 6, 8, 7, 7, 4, 3, 6, 6, 6, 7, 5, 4, 3, 3, 2, 5.

Prepare a frequency distribution table for the data using class intervals 0 – 2, 2 – 4, etc.

Draw a histogram to represent the frequency distribution in question 91.

The marks obtained (out of 20) by 30 students of a class in a test are as follows:

14, 16, 15, 11, 15, 14, 13, 16, 8, 10, 7, 11, 18, 15, 14, 19, 20, 7, 10, 13, 12, 14, 15, 13, 16, 17, 14, 11, 10, 20.

Prepare a frequency distribution table for the above data using class intervals of equal width in which one class interval is 4 – 8 (excluding 8 and including 4).

Prepare a histogram from the frequency distribution table obtained in question 93.

The weights (in kg) of 30 students of a class are:

39, 38, 36, 38, 40, 42, 43, 44, 33, 33, 31, 45, 46, 38, 37, 31, 30, 39, 41, 41, 46, 36, 35, 34, 39, 43, 32, 37, 29, 26.

Prepare a frequency distribution table using one class interval as (30 – 35), 35 not included.

1. Which class has the least frequency?
2. Which class has the maximum frequency?

Construct a frequency distribution table for the following weights (in grams) of 35 mangoes, using the equal class intervals, one of them is 40 – 45 (45 not included).

30, 40, 45, 32, 43, 50, 55, 62, 70, 70, 61, 62, 53, 52, 50, 42, 35, 37, 53, 55, 65, 70, 73, 74, 45, 46, 58, 59, 60, 62, 74, 34, 35, 70, 68.

1. How many classes are there in the frequency distribution table?
2. Which weight group has the highest frequency?

Complete the following table:

Find the total number of persons whose weights are given in the above table.

Draw a histogram for the following data.

The below histogram shows the number of literate females in the age group of 10 to 40 years in a town.

1. Write the classes assuming all the classes are of equal width.
2. What is the classes width?
3. In which age group are literate females the least?
4. In which age group is the number of literate females the highest?