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
Grouping of frequencies is a process of calculating
Index number
Correlation
Mean
Mode
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.
The sum of deviations of items from the arithmetic mean is always equal to
0
1
2
3
In these days ,meteorological forecasts are based upon :
Median
Choose the correct statement :
The sum of all observation in a series divided by the total number of observations
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 should be
Rigidly defined
Simple
Based on all items
All the above
