In the formula for finding the mean of grouped data, dis are deviations from a, of : 1. lower limits of the classes 2. upper limits of the classes 3. mid-points of the classes 4. frequencies of the class marks

Question

KnowledgeBoat · Accepted Answer

Given, the deviation di are calculated as: di = xi - a where xi are the class marks. So, the deviations are taken from mid-points of the classes. Hence, option 3 is the correct option.

Mathematics

In the formula for finding the mean of grouped data, dis are deviations from a, of : 1. lower limits of the classes 2. upper limits of the classes 3. mid-points of the classes 4. frequencies of the class marks

Measures of Central Tendency

Related Questions

For what value of x the mean of the given observations (2x − 5), (x + 3), (7 − x), (5 − x) and (x + 9) with frequencies 2, 3, 4, 6 and 1 respectively is 4?
1
2
3
4

If x_i's are the class marks of the class-intervals of grouped data, f_i's are the corresponding frequencies and x̄ is the mean, then Σ f_i(x_i − x̄) is equal to :
−1
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Mathematics

In the formula for finding the mean of grouped data, dis are deviations from a, of : 1. lower limits of the classes 2. upper limits of the classes 3. mid-points of the classes 4. frequencies of the class marks

Measures of Central Tendency

Related Questions

For what value of x the mean of the given observations (2x − 5), (x + 3), (7 − x), (5 − x) and (x + 9) with frequencies 2, 3, 4, 6 and 1 respectively is 4?1234

If xi's are the class marks of the class-intervals of grouped data, fi's are the corresponding frequencies and x̄ is the mean, then Σ fi(xi − x̄) is equal to :−1012

For what value of x the mean of the given observations (2x − 5), (x + 3), (7 − x), (5 − x) and (x + 9) with frequencies 2, 3, 4, 6 and 1 respectively is 4?
1
2
3
4

If x_i's are the class marks of the class-intervals of grouped data, f_i's are the corresponding frequencies and x̄ is the mean, then Σ f_i(x_i − x̄) is equal to :
−1
0
1
2