Mean should be
Rigidly defined
Simple
Based on all items
All the above
Highest frequency value of a series is known as
Mean
Median
Mode
Mean deviation
In these days ,meteorological forecasts are based upon :
Index number
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
The sum of deviations of items from the arithmetic mean is always equal to
0
1
2
3
Choose the correct statement/ equations
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.
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 .
Mid - point is calculated by using following formula :
