Question

You are given below the daily wages paid to the workers in the two factories X and Y: Daily Wages: 12-14 14-16 16-18 18-20 20-22 22-24 24-26 Factory X: 15 30 44 60 40 14 7 Factory Y :25 40 60 35 12 15 5 .Which factory show greater uniformity in their wages structure? ​

Answer 1

Answer:

Class

(Time in hours) Class Mark

xi Frequency

(Number of students)

fi Class mark × Frequency

xifi

0 - 2 1 7 7

2 - 4 3 18 54

4 - 6 5 12 60

6 - 8 7 10 70

8 - 10 9 3 27

∑fi=50 ∑xifi=218

Mean = ∑xifi∑fi

=21850

= 4.36 hours

Hence, the mean time spent by students for their studies is 4.36 hours.

Step-by-step explanation:

Class

(Time in hours) Class Mark

xi Frequency

(Number of students)

fi Class mark × Frequency

xifi

0 - 2 1 7 7

2 - 4 3 18 54

4 - 6 5 12 60

6 - 8 7 10 70

8 - 10 9 3 27

∑fi=50 ∑xifi=218

Mean = ∑xifi∑fi

=21850

= 4.36 hours

Hence, the mean time spent by students for their studies is 4.36 hours.