Question

Q1. A research was conducted to improve the safety plans in a factory. In this study, the accidental data of the factory for the last 50 weeks were compiled. These data are grouped into the frequency distribution as shown below:
Number of Accidents Numbers of Weeks 0-5 8
5-10 22
10-15 10
15-20 8
20-25 2
Draw a histogram and calculate the average number of accidents per week.

Answer 1

Answer:

10 accidents per week

Step-by-step explanation:

Histogram is attached in the answer.

To find the average number of accidents

Number of

Accidents. Numbers of Weeks xifi

0-5 (xi=2.5) 8 -- 20

5-10 (xi=7.5) 22 -- 165

10-15(xi=12.5) 10 --125

15-20(xi=17.5) 8 --140

20-25(xi=22.5) 2 --45

Sum of xifi=20+165+125+140+45=495

Average number of accidents

$= \frac{495}{50} \\ \\ = 9.9$

Approx 10 accidents per week.

Hope it helps you.