Question

please answer this question ​

Answer 1

Class interval Frequency (f

i

) x

i

=

2

lower limit + upper limit

f

i

x

i

0−10 7 5 35

10−20 8 15 120

20−30 12 25 300

30−40 13 35 455

40−50 10 45 450

Σf

i

=50 Σf

i

x

i

=1360

Mean =

Σf

i

Σf

i

x

i

=

50

1360

=27.2

Answer 2

Answer:

58 is the mean of the given data by using assumed mean method