# CBSE Class 10 Maths 2018 Question Paper | Q 30B

###### CBSE Solved Question Paper 4 Mark | Statistics

Question 30B: The following distribution gives the daily income of 50 workers of a factory:

Daily Income 100 - 120 120 - 140 140 - 160 160 - 180 180 - 200
Number of Workers 12 14 8 6 10

Convert distribution given above to a less than type cumulative frequency distribution and draw its ogive.

## NCERT Solution to Class 10 Maths

### Explanatory Answer | CBSE Class 10 Math 2018 Paper Q 30B

#### Step 1: Convert to less than type cumulative frequency distribution

Daily Income Rs. No. of workers
Less than 120 12
Less than 140 12 + 14 = 26
Less than 160 26 + 8 = 34
Less than 180 34 + 6 = 40
Less than 200 40 + 10 = 50

#### Step 2: Let us plot an ogive

The points corresponding to the ordered pairs given by (upper limit, corresponding cumulative frequencies)
i.e; (120, 12), (140, 26), (160, 34), (180, 40) and (200, 50)

###### Try CBSE Online CoachingClass 10 Maths

Register in 2 easy steps and
Start learning in 5 minutes!