General Studies · Measures of Central Tendency
Find out the statement from the following which is NOT correct:
- 1The calculation of arithmetic mean is based on all the observations.
- 2The methods of calculating arithmetic mean are completely different in case of exclusive, inclusive, and unequal class intervals.✓
- 3Arithmetic mean is affected by extreme values.
- 4The sum of deviations of items about the arithmetic mean is always equal to zero.
Correct answer
The methods of calculating arithmetic mean are completely different in case of exclusive, inclusive, and unequal class intervals.
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