Question

Calculate the co-efficient of correlation using Karl Person's method of the series given below:

Q32. Construct the cost of living index for 2019 on the basis of 2011 from the following data.

OR

State the four principle importance of index numbers.

Q33. Define Statistic. Explain its importance.

Q34.Using step-deviation method, find out standard deviation from the following data -set:-

Age(unde r) 10 20 30 40 50 60

Number of persons 15 32 51 78 97 100

OR

Find out mode from the following data.

Class

interval

5-10 10-15 15-20 20-25 25-30 30-35 35-40

Number of

children

4 5 3 2 6 7 3

X 10 12 15 23 20

Y 14 17 23 25 21

Items Prices in 2011 Prices in 2019 Weights​

Answer 1

Answer:

q32

ans    

Commodities Unit Price (In ₹)

2011 2016

Wheat quintal 200 250

Rice quintal 300 400

Pulses quintal 400 500

Milk litre 2 3

Clothing meter 4 5

q33

Statistical knowledge helps you use the proper methods to collect the data, employ the correct analyses, and effectively present the results. ... Statistics is a crucial process behind how we make discoveries in science, make decisions based on data, and make predictions.

Explanation: