If Skewed distribution the three averages mean, median and mode are ________?

Technical & Trade Journals are the source of ________ data?

If E(x) is the expected value of X then E[x – E(x)]= ________?

When using the sign test, if two scores are tied, then________?

An Index Number calculated for more than one items is called ________?

if we connect the mid point of rectangles in a histogram with a series of lines, we get ________