Question

(vi) What is probable error of correlation cocfficient ? (vii) What is Secular Trend? (vii)Define Index numer. (ix) Write down Fisher's formula for the Calculation of Index number. (x) Define mutually exclusive events. (x1) What is simple-random sampling? Bional probability​

Answer 1

Answer:

vi) Probable Error is basically the correlation coefficient that is fully responsible for the value of the coefficients and its accuracy.

vii) A secular trend or market is one that is likely to continue moving in the same general direction for the foreseeable future. ... The secular movement of a long-term trend can be neutral (flat), positive, or negative in its direction.

viii) The index number is a process for evaluation of different alterations in a variable or a group of variables with respect to time, geographical location etc. Its significance is derived from the fact that it can be utilised for the measurement of differences within related variables belonging to a group.

ix) in the image

x) In logic and probability theory, two events are mutually exclusive or disjoint if they cannot both occur at the same time. A clear example is the set of outcomes of a single coin toss, which can result in either heads or tails, but not both.

xi) In statistics, a simple random sample is a subset of individuals chosen from a larger set in which a subset of individuals are chosen randomly, all with the same probability. In srs, each subset of k individuals has the same probability of being chosen for the sample as any other subset of k individual

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