Business Statistics And Research Methods - Study Mode
[#581] The law of statistics, which says "Moderately large number of items chosen at random from a large group possess the characteristics of the large group", is referred to as
Correct Answer
(B) The law of statistical regularly
Explanation
Solution: The law of statistical regularity states that a moderately large number of items chosen at random from a large group will likely possess the same characteristics as the large group. This law is fundamental in sampling theory and ensures that a sample is representative of the population from which it is drawn. It relies on the principle of probability, which guarantees that random selection leads to an accurate reflection of the population's properties. This law is crucial in fields like business statistics where sampling is essential for data analysis.
[#582] The difference between sample statistic and its corresponding population parameter is
Correct Answer
(A) Sampling error
[#583] Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one. Reason (R): The geometric mean between two regression coefficients is the coefficient of correlation.
Correct Answer
(A) Both (A) and (R) are true
[#584] If in Binomial distribution mean is 10 and standard deviation 2, q will be
Correct Answer
(C) 0.4
[#585] Consider the following statements: 1. Quartile deviations is more instructive range as it discards the dispersion of extreme items 2. Coefficient of quartile deviaton cannot be used to compare the degree of variations in different distributions 3. There are 10 deciles for a series Which one of the above statements is/are correct?
Correct Answer
(C) 3 alone