___________ is the most stable measure of variability and is used in many other statistical operations.
Mean deviation
Standard deviation
Range
None of these
The middle value of a class is called ________.
Lower class limit
Upper class limit
Class mark
Mid point
The __________ is widely used in advanced statistical operations.
Variance
Frequency
___________ is a measure of relationship between two or more sets of data.
Correlation
___________ refers to the scattering of scores about the measure of central tendency.
Frequency polygon
Dispersion
___________ is defined as the root mean square deviation.
____________ are also known as bell shaped curve.
Normal distribution curve
Lorenz curve
____________ is the most widely used measure of dispersion.
_________ is symbolized as Z or Mo.
Mean
Mode
Median
_______ is a positional average.
