Grouping of Data

In a group of data, there are n observations, x,x_(2), ..., x_(n)." If "sum_(i=1)^(n)(x_(i)+1)^(2)=9n and sum_(i=1)^(n)(x_(i)-1)^(2)=5n , the standard deviation of the data is

Mean of Grouped Data|Direct Method|Assumed Mean Method|Step Division Method|Mode of Un-Grouped Data|Questions|Median of Grouped Data|Relation Between Mean, Mode and Median|Questions

Mean of Grouped Data|Direct Method|Assumed Mean Method|Step Division Method|Mode of Un-Grouped Data|Questions|Median of Grouped Data|Relation Between Mean, Mode and Median|Questions

Introduction|Data|Collection Of Data|Types Of Data|Presentation Of Data|Statistics|Measure Of Central Tendency|Mean Of Ungrouped Data|Mean Of Grouped Data|Methods To Find Mean Of Grouped Data|Question (Direct Method)|OMR

OMR|Median|Median Of Grouped Data|Questions

Questions|Mode Of Grouped Data|Questions|OMR

Mean of Grouped Data or discrete frequency distribution

Mean Of Grouped Data (With Class Intervals)|Practice Problems

Median Of Ungrouped Data |Median|Median Of Grouped Data |Practice Problem|Statistics

Measures Of Central Tendency|Mode Of Grouped Data|NCERT Examples