CBSE Class 10-Mathematics: Chapter – 14 Statistics Part 7 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 7:

If the values of mean and mode are respectively and , then median

(a)

(b)

(c)

(d)

Answer:

Median Mode

Question 8:

If the mean of the following data is . find the value of P.

Answer:

We have

Now mean

Question 9:

Find the mean of the following data.

Answer:

We have

Now mean

Hence, mean

Question 10:

The following data gives the information observed life times (in hours) of electrical components. Determine the modal life times of the components.

Answer:

Since the maximum frequency and it corresponds to the class

Here,

We know that mode Mo is given by

Thus, modal life hours