Question

Write the frequency of class interval 40-45​

Answer 1

Answer:

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Answer 2

Answer:

Find the class marks of classes 30−35,35−40 and 40−45 in the data below:

Marks Number of student

30−35 5

35−40 8

40−45 15

45−50 20

50−55 5

55−60 4

60−65 4

65−70 2

70−75 3

MEDIUM

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ANSWER

Marks Number of student

30-35 5

35-40 8

40-45 15

45-50 20

50-55 5

55-60 4

65-70 2

70-75 3

Class mark =

2

upperlimit+lowerlimit

for 30-35 =

2

30+35

=32.5

for 35-40 =

2

35+40

=37.5

for 40-45=

2

40+45

=42.5