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Q. Value of b in the trend line Y = a + bX is:

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Q. If r is the simple correlation coefficient, the quantity ?2 is known as ...................

Q. Find the Mode of 5, 3, 27, 5, 9, 3, 8, 5:

Q. A data set may have no mode, one mode, or multiple modes.

Q. The first three moments of a distribution about the mean are 1, 4 and 0. The distribution is:

Q. Which of the following is a component of timer series;

Q. The range of the scores 29, 3, 143, 27, 99 is:

Q. A complete business cycle consists of a period of:

Q. If mean absolute deviation of set of observations is 8.5 then value of quartile deviation is