Jose Paul Solutions for Chapter: Statistics, Exercise 1: EXERCISE 18.1

Find the size of the class interval in the following case.

$0 - 10$

$10 - 20$

$20 - 30$

$30 - 40$

Find the size of the class interval in the following case.

Given below is the data collected from an automobile shop regarding sales of cars during the year.

If the average sale per month is $k$ automobiles/month, then find the value of $k$ (Up to two decimal places).

The heights of eleven players in a football team are as follows. The heights are given in $\mathrm{cm}$.

$148, 154, 152, 146, 160, 162, 148, 165, 141, 166, 161.$

If the mean height of the players is $k \mathrm{cm}$, then find the value of $k$.

Calculate the mean of the following data.

$3.0, 4.0, 2.5, 3.3, 6.5, 4.3, 2.8, 7.6$

If the arithmetic mean of the following data is $₹a$, then find the value of $a$.

Find the arithmetic mean of the following data.

Look at the histogram given below and answer the following question.

The salary from $₹5000$ to less than $₹6000$ are meant for unskilled labourers. How many such labourers are there?