CBSE Class 10-Mathematics: Chapter – 14 Statistics Part 7 (For CBSE, ICSE, IAS, NET, NRA 2023)

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Question 7:

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






Median Mode

Question 8:

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

The Mean of the Following Data


We have

Find the Value of P

Now mean

Question 9:

Find the mean of the following data.

Construct the Cumulative Frequency Distribution


We have

Classes Mid-Value of Frequency
ClassesMid-value Frequency

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.

Determine the Modal Life Times of the Components
Life time (in hours)


Since the maximum frequency and it corresponds to the class


We know that mode Mo is given by

Thus, modal life hours