# <span lang="EN-US

According to the question,

At first,

We will draw the frequency table of the given data.

Hence, (i) Now,

Clearly, The highest number among the given data is 9

(ii) Clearly, The lowest number among the given data is 1

(iii)

We know that,

Range = Highest value – Lowest value

Hence,

Range of the given data can be calculated as follows:

Range = highest number – lowest number

= 9 – 1

= 8

(iv) Here,

We have to find the arithmetic mean of the given data

Now,

At first,

We’ll find the sum of all the observations

Thus,

Sum of all the observations = 4 + 6 + 7 + 5 + 3 + 5 + 4 + 5 + 2 + 6 + 2 + 5 + 1 + 9 + 6 + 5 + 8 + 4 + 6 + 7 = 100

Now,

Total number of observations = 20

Hence,

Arithmetic mean = = = 5

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