Statistics

While computing mean of grouped data, we assume that the frequencies are

The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its

The median of set of 9 distinct observations is 20.5. If each of the largest 4 observations of the set is increased by 2, then the median of the new set

The A.M. of a set of 50 numbers is 38. If two numbers of the set namely 55 and 45 are discarded, the A.M. of the remaining set of numbers is

Mean of 100 items is 49. It was discovered that three items which should have been 60, 70, 80 were wrongly read as 40, 20,50 respectively. The correct mean is

If the mode of a data is 18 and the mean is 24, then median is