ELEMENTS OF STATISTICS, SET 16

ELEMENTS OF STATISTICS

Q.1

The errors involved in the construction of index number are

Ans. 

Sampling error, formula errors and errors in collection of data.

Q.2

Which test is not satisfied by Fisher's formula?

Ans. 

Circular test.

Q.3

Term 'Kurtosis' was introduced by

Ans. 

Karl Pearson in the year 1906.

Q.4

For what sample size the t test can be applied.

Ans. 

When sample size < 30.

Q.5

What are the basic steps of field experimentation?

Ans. 

(i) Replication, 

(ii) Randomization, 

(iii) Local control.

Q.6

In which fields the geometric means is commonly used?

Ans. 

To find average percent increase in sales, production or other economic or business series.

Q.7

Geometric mean can be easily calculated with help of

Ans. 

logarithm.

Q.8

What is the relation between mean, median, and mode?

Ans. 

Mode= 3 median–2mean.

Q.9

In variance ratio test, which variance is kept as the numerator?

Ans. 

Larger variance.

Q.10

How many types of hypothesis exist?

Ans. 

Simple, null, composite and statistical

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