ELEMENTS OF STATISTICS, SET 2

ELEMENTS OF STATISTICS

Q.1

To find the average height of plants we should use.

Ans. 

Arithmetic mean.

Q.2

We study measure of central tendency.

Ans. 

To represent the whole data by only single value.

Q.3

The suitable measure to find average speed when time for each speed is fixed would be.

Ans. 

Arithmetic mean.

Q.4

In industries for quality control, the most important measure of dispersion. 

Ans. 

Range.

Q.5

What is the order of three averages Arithmetic Mean, Geometric Mean & Harmonic mean for a given data

Ans. 

AM≥GM≥HM.

Q.6

The value of (X²) chi square always lies between.

Ans. 

0 to ∞.

Q.7

The degree of freedom to test the significance of different between two means based on n₁ n₂ observation is.

Ans. 

n₁+n₂–2.

Q.8

For comparing 4 treatments with R.B. design, the 15 different frequencies can be obtained when the no. of replication are.

Ans. 

6.

Q.9

Most commonly used measure of central tendency is.

Ans. 

Arithmetic Mean.

Q.10

Which measure of dispersion is considered as best ?

Ans. 

Standard deviation.

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