If variance is 49 then what is the standard deviation?
यदि variance 49 है तो standard deviation कितना होगा?
Show answer and explanation
Correct Answer
A. 7 / 7
ExplanationStep 1: Standard deviation is square root of variance. Step 2: √49=7 so option A is correct. Step 3: Take square root to get SD from variance.
Step 1: Standard deviation variance का square root होता है। Step 2: √49=7 इसलिए option A सही है। Step 3: Variance से SD निकालते समय square root लें।