Arithmetic mean for the given data is
Marks
No. of students
0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
50 - 60
5
10
25
30
20
10

55

No worries! We‘ve got your back. Try BYJU‘S free classes today!

35

No worries! We‘ve got your back. Try BYJU‘S free classes today!

2

No worries! We‘ve got your back. Try BYJU‘S free classes today!

33

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $33$
Mean $=$ $\frac{Sum of (class mark \times frequency)}{Sum of frequency}$

Mean $=$ $\frac{5 \times 5 + 15 \times 10 + 25 \times 25 + 35 \times 30 + 45 \times 20 + 55 \times 10}{5 + 10 + 25 + 30 + 20 + 10}$

Mean $=$ $\frac{3300}{100}$ = $33$

Suggest Corrections

X(Rs.in 000)	10-20	20-30	30-40	40-50	50- 60	60- 70
Y(Frequency)	2	3	6	5	2	2

Marks	0-10	10-20	20-30	30-40	40-50	50-60
Number of Students	12	18	27	20	17	6

Profit ( in ₹)	:	0-10	10-20	20-30	30-40	40-50	50-60
No of shops	:	12	18	27	20	17	16

Class	0-10	10-20	20-30	30-40	40-50	50-60
Frequence	6	7	15	16	4	2

Class	0-10	10-20	20-30	30-40	40-50	50-60
Frequency	6	7	15	16	4	2

Marks	No. of students
0 - 10 10 - 20 20 - 30 30 - 40 40 - 50 50 - 60	5 10 25 30 20 10