ELEMENTS OF STATISTICS
Q.1
β₂ is a measure of.
Ans.
Kurtosis.
Q.2
When the value of x²–static is zero ?
Ans.
If observed frequency is equal to expected one.
Q.3
The S.D. of the sampling distribution is called.
Ans.
Standard error.
Q.4
The student 't' distribution test was discovered by.
Ans.
W.S. Gosset (1908).
Q.5
The student 't' test was perfected by.
Ans.
R.A. Fisher (1926).
Q.6
In describing the amount of variation in a population & measure often used is
Ans.
Coefficient of variation (C.V.).
Q.7
In an investigation when two groups or two procedures are compared, these procedures are called.
Ans.
Treatments.
Q.8
Whether 't' test is parametric or non parametric.
Ans.
Parametric.
Q.9
Ordinary sign test is a
Ans.
Non parametric test.
Q.10
Who developed the idea of regression.
Ans.
Sir Franis Galton.
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