problem 1) Describe in detail the method of collecting primary data through ‘questinonnaire’.
problem 2) Compute the co-efficient of variation of the following two series and show which series is more reliable.
Weight in Kg 0-10 10-20 20-30 30-40 40-50 50-60 60-70
Class-A: f: 1 2 9 8 5 4 1
Class B:f: 1 3 7 8 7 3 1
problem 3) Compute Yule’s Coefficient of Association between Literacy and Unemployment from the data given below. Total adults: 2,25,000; Literates:50,000; Unemployed: 17,000; Literate and unemployed: 7,000.
problem 4) Describe the meaning and significance of time series
problem 5) Construct the cost of living index number for the following data.
Group Weights Base year Current year
A 404 560
B 100 609
C 150 506
D 151 012
E 202 025
problem 6) A bag contains 10 red, 5 white and 4 blue balls. If 4 balls are drawn at random, find out the probability that:
(a) All 4 are blue balls and
(b) red, 2 white and 1 blue ball.
problem 7) prepare down the merits and limitations of systematic sampling.
problem 8) Briefly describe the data sources of the Indian economy.
problem 9) Compute measure of skewness based on quartiles from the following data:
Mid-value 115 125 135 145 155 165 175 185 195
Frequency 6 25 48 72 116 60 38 22 3
problem 10) Detemrine the two regression equations from the following data :
X 6 2 10 5 9
Y 9 11 5 9 8