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Recent questions tagged mean-and-standard-deviation
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GATE2020: 24
A normal random variable has mean equal to $0$, and standard deviation equal to $3$. The probability that on a random draw the value of this random variable is greater than $0$ is __________ (round off to $2$ decimal places).
soujanyareddy13
asked
in
Probability and Statistics
Nov 3, 2020
by
soujanyareddy13
2.7k
points
gate2020
numerical-answers
probability-and-statistics
probability
mean-and-standard-deviation
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0
answers
2
GATE2016-GA-6
Students taking an exam are divided into two groups: $P$ and $Q$ such that each group has the same number of students. The performance of each of the students in a test was evaluated out of $200$ marks. It was observed that the mean of group $P$ was $105$, while ... of group $Q$ scored marks in a narrower range than students in group $P$. The median of the marks of group $P$ is $100$.
Milicevic3306
asked
in
Quantitative Aptitude
Mar 26, 2018
by
Milicevic3306
7.9k
points
gate2016
numerical-ability
statistics
mean-and-standard-deviation
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votes
0
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3
GATE2012-63
Which of the following assertions are CORRECT? P: Adding 7 to each entry in a list adds 7 to the mean of the list Q: Adding 7 to each entry in a list adds 7 to the standard deviation of the list R: Doubling each entry in a list doubles the mean of the list S: Doubling each entry in a list leaves the standard deviation of the list unchanged P, Q Q, R P, R R, S
Milicevic3306
asked
in
Quantitative Aptitude
Mar 25, 2018
by
Milicevic3306
7.9k
points
gate2012
numerical-ability
mean-and-standard-deviation
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