Question

The scores of 30 students in a class test are given below. Make a frequency table and

answer the following questions? a) How many children scored 20?

b) How many children got scores between 15 and 20?

c) How many scored less than 12?

d) What is the score most number of children got?​

Answer 1

Step-by-step explanation:

Ans,A= 4 children scored 20 marks.

Ans ,B= 7 children got score between 15&20.

Ans ,C= 6 student scored less than 12

Ans,D= 7 children

Answer 2

Step-by-step explanation:

Given:-

The scores of 30 students in a class test are given below.

To find:-

Make a frequency table and answer the following questions?

a) How many children scored 20?

b) How many children got scores between 15 and 20?

c) How many scored less than 12?

d) What is the score most number of children got?

Solution:-

See the above attachment

Highest Score = 20

Lowest Score = 10

Range = Heighest value-Lowest value

=> Range = 20 - 10

Range = 10

Class interval = 2 and 5

Classes = Exclusive or Overlapping classes

Classes = 10-12 ,12-14,...,20-22

1)Total number of children got 20 marks in the test = 4

2) Total number of children got scores between 15-20 = 12

(including 15 and 20)

Total number of children got scores between 15-20 except 15 and 20 = 7

3) Number of children scored less than 12 = 6

4)The score which is the most children got = 15

(5 students got 15 marks)

Answer:-

a)Total number of children got 20 marks in the test = 4

b)Total number of children got scores between 15-20 = 7

c)Number of children scored less than 12 = 6

d)The score which is the most children got = 15