The varience of 15 observations is 4, if each observation is increased by 9, the varience of the resulting observation is

Related MCQs

• The mean of a observation is x. If k is added to each observation then new mean is_______________
• The median of a series is 10. Two additional observations 8 and 15 are added to the series. The median of the new series will be ____________________
• If the prices of all commodities in a place have increased 1.25 times more on the base period price. The index number of prices of that place is now