Fill in the blanks with a suitable word as given in the bracket.

(i) sampling method involves grouping the population into heterogeneous groups. (cluster/stratified)

(ii) The errors caused by drawing inference about the population on the basis of samples are termed as errors. (sampling/non-sampling)

(iii) Construction of classes as 10-19, 20-29 etc., refers to method of frequency distribution. (inclusive/ exclusive)
sampling is the probability sampling method. (Quota/Area) ratio is defined as the ratio of a part to a total which includes that part also. (Interpart/Distribution)

(vi) An ogive helps in locating the value of

(vii) For a moderately skewed distribution, the empirical relation is given as Mo -3X

(viii) Q3-Q1/Q3 Q1 is the formula of deviation. (Quartile/Coefficient of Quartile)
Distinguish between descriptive and inferential statistics.

2. Explain the functions of statistics and enumerate the limitations of statistics. 6V2,

3.(a) From the following data calculate the mean :

Class 0-10 10-20 20-30 30-40 40-50 50-60
Frequency 2 6 9 7 4 2 Draw a complex table by considering the attributes of sex and marital status of students in a college during 2010-11 to 2013-14 with hypothetical figures.

Using Bowley's method calculate coefficient of skewness from the following data

Class 0-10 10-20 20-30 30-40 40-50 50-60
Frequency 12 18 20 15 13 3

5.(a) Draw a pie diagram to represent the following data:
Items Expenditure(RS)
Food 2,000
Clothing 500
Rent 1,000
Other expenses 300
If L1=200; c=550; f i N 1,210; find out the median.

6.(a) What is the procedure involved in determination of mode graphically What are the precautions to be taken while using the secondary data? Discuss.

7.(a) From the following data, calculate standard deviation:

Marks 10-20 20-30 30-40 40-50 50-60 60-70
No. of students 10 18 32 40 22 18 Distinguish between ratios and rates.