Question

this is the question, please solve.​

Answer 1

Answer:

sum of total observations ÷number of observations

Answer 2

Answer:

No. of days No. of student

f

i

x

i

f

i

x

i

0-6 11 3 33

6 - 10 10 8 80

10 - 14 7 12 84

14 - 20 4 17 68

20 - 28 4 24 96

28 - 38 3 33 99

38 - 40 1 39 39

Σf

i

=40 Σf

i

x

i

=499

The mean number of days a student was absent =

Σf

i

Σf

i

x

i

=

40

499

=12.475

Hence, the mean number of days a student was absent is 12.475.

Step-by-step explanation:

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