Question

The following table shows the cumulative frequency distribution of marks of 34 studentsin a test:Marks (out of 90)Number of studentsMore that or equal to 80More that or equal to 70More that or equal to 60More that or equal to 50More that or equal to 40More that or equal to 30More that or equal to 20More that or equal to 10More that or equal to 0Construct a frequency distribution table for the data above.Also, find the mean of the data.​

Answer 1

Answer:

First prepare the cumulative frequency table:

Marks

No. of students

Cumulative frequency

80 - 90

150 – 141 = 9

9

90 – 100

141 – 124 = 17

9 +17 = 26

100 - 110

124 – 105 = 19

26 +19 = 45

110 - 120

105 – 60 = 45

45 + 45 = 90

120 -130

60 – 27 = 33

90 + 33 = 123

130 – 140

27 – 12 = 15

123 + 15 = 138

140 -150

12- 0 = 12

138 + 12 =150

Read more on Brainly.in - https://brainly.in/question/8062687#readmore