PracBeeLogin

Jee Main

Statistics

JEE Main 2021 (Online) 25th July Evening Shift

MCQ+4 / -12021
The first of the two samples in a group has 100 items with mean 15 and standard deviation 3. If the whole group has 250 items with mean 15.6 and standard deviation \(\sqrt {13.44}\), then the standard deviation of the second sample is :

Continue this paper

Previous questionQuadratic Equation And Inequalities2021INTEGERNext questionStraight Lines And Pair Of Straight Lines2021MCQ

Similar Statistics PYQs

Jee Main questionStatistics2026MCQJee Main questionStatistics2026MCQJee Main questionStatistics2026MCQJee Main questionStatistics2026MCQJee Main questionStatistics2026MCQJee Main questionStatistics2026MCQ

More practice from this question

All Statistics PYQsMathematicsJEE Main 2021 (Online) 25th July Evening Shift2021Browse Jee Main chapters