While computing the arithmetic mean of a frequency distribution, the each value of a class is considered equal to:

Related MCQs

• If X1, X2, X3, ... Xn, be n observations having arithmetic mean and if Y =4X ± 2, then is equal to:
• If the arithmetic mean of 20 values is 10, then sum of these 20 values is:
• If the arithmetic mean of the two numbers X1 and X2 is 5 if X1=3, then X2 is:
• For a certain distribution, if ∑(X -20) = 25, ∑(X- 25) =0, and ∑(X-35) = -25, then is equal to:
• The lower and upper quartiles of a symmetrical distribution are 40 and 60 respectively. The value of median is:
• A measurement that corresponds to largest frequency in a set of data is called:
• The sum of the squares fo the deviations about mean is:
• If =100 and Y=2X – 200, then mean of Y values will be: