__________ is the positive square root of the mean of squared deviations from mean.
Mean deviation
Standard deviation
Quartile deviation
Mode
There is no correlation when:
All the points lie on a straight line rising from left to right
All the points lie on a narrow band rising from left to right
All the points are scattered all over the graph
When all the points are following a narrow band from left to right
Write the false statement:
Range is the easiest and simplest measure because it is the difference between two extreme items.
Quartile deviation is superior to the range as it is not affected too much by the value of extreme items.
Range and quartile deviation are based on all the items of series.
Range and quartile deviation are useful for general study of variability.
______________ is not independent of scale.
Semi- inter quartile range is also known as:
Quartile range
_________ and______ are based upon deviation of values from the average.
M.D and S.D
Range and Q.D
S.D and Q.D
M.D and Q.D
Q1 represents:
Lower quartile
First quartile
Both (a) and (b)
Neither (a) or (b)
Highest frequency value of a series is known as
Mean
Median
Median can be calculated from :
Individual series
Discrete series
Continuous series
All the above
The range of simple correlation coefficient is:
Minus infinity to infinity
0 to infinity
Minus one to plus one
0 to hundred