The sum of deviations of items from the arithmetic mean is always equal to
0
1
2
3
Which is not a merit of arithmetic mean ?
It is simpler to understand and easy to calculate .
It is affected by extreme items.
It is good base for comparison
It is a calculate value
Mid - point is calculated by using following formula :
Median is also known as
Q1
Q2
Q3
Q4
The ______ is the middle element when the data set is arranged in order of the magnitude.
Mean
Median
Mode
Index number
Choose the correct statement/ equations
The sum of all observation in a series divided by the total number of observations
The most suitable average for qualitative measurement is
Arithmetic mean
Geometric mean
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 .
_________ is the most frequently observed data value.
Correlation
Arithmetic mean is
Moving average
Progressive average
Mathematical average
Positional average
