# CBSE Class 10-Mathematics: Chapter –14 Statistics Part 7

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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.

Classes | |||||

Frequency |

**Answer:**

We have

Classes | Mid-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.

Life time (in hours) | ||||||

Frequency |

**Answer:**

Since the maximum frequency and it corresponds to the class

Here,

We know that mode Mo is given by

Thus, modal life hours