Mid - point is calculated by using following formula :
Grouping of frequencies is a process of calculating
Index number
Correlation
Mean
Mode
Mean should be
Rigidly defined
Simple
Based on all items
All the above
For calculating Q1 and Q3 , the values
Need not to be arranged
Must be arranged in ascending order only
Must be arranged in descending order only
May be arranged either in ascending order or descending order .
Arithmetic mean is
Moving average
Progressive average
Mathematical average
Positional average
In these days ,meteorological forecasts are based upon :
Median
Which is a demerit of median ?
Data need to be arranged in ascending or descending order
It is not affected by extreme values
It can be determined graphically
It is easy to calculate and understand
The most suitable average for qualitative measurement is
Arithmetic mean
Geometric mean
The sum of deviations of items from the arithmetic mean is always equal to
0
1
2
3
