Question

Find the mean of the data given below by all the three methods: Class 0 – 10 10 – 20 20 – 30 30 – 40 40 – 50 50 – 60 60 – 70 Frequency 4 8 3 20 3 4 8
Plss find mean by three methods​

Answer 1

Answer:

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>Economics

>Measures of Central Tendency

>Arithmetic Mean in Statistics

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Find the mean of the following data, by using the assumed mean method.

Class Interval

0−10

10−20

20−30

30−40

40−50

Frequency

7

8

12

13

10

Easy

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Answer

Correct option is

C

27.2

Answer:-

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:

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