Q. If =100 and Y=2X – 200, then mean of Y values will be:
✅ Correct Answer: (A)
0
Mathematics - BCA MCQs and Notes
Q. If X1, X2, X3, ... Xn, be n observations having arithmetic mean and if Y =4X ± 2, then is equal to:
✅ Correct Answer: (C)
4 ± 2
Q. The sum of the squares of the deviations of the values of a variable is least when the deviations are measured from
✅ Correct Answer: (D)
Arithmetic mean
Q. For a certain distribution, if ∑(X -20) = 25, ∑(X- 25) =0, and ∑(X-35) = -25, then is equal to:
✅ Correct Answer: (B)
25
Q. The sum of the squares fo the deviations about mean is:
✅ Correct Answer: (C)
Minimum
Q. While computing the arithmetic mean of a frequency distribution, the each value of a class is considered equal to:
✅ Correct Answer: (B)
Lower limit
Q. The total of all the observations divided by the number of observations is called:
✅ Correct Answer: (A)
Arithmetic mean
Q. The measure of central tendency listed below is:
✅ Correct Answer: (B)
The mean
Q. Scores that differ greatly from the measures of central tendency are called:
✅ Correct Answer: (C)
Extreme scores
Q. Any measure indicating the centre of a set of data, arranged in an increasing or decreasing order of magnitude, is called a measure of
✅ Correct Answer: (C)
Central tendency