Q1MathsUnit 13: Statistics and Probability
In an experiment with 15 observations
on then following results were
available:
One observation that was 20 was found
to be wrong and was replaced by the
correct value Then the corrected
variance is:
Mathematics · JEE
Hard Calculation of standard deviation, variance and mean deviation for grouped and ungrouped data MCQs for JEE
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Hard Calculation of standard deviation, variance and mean deviation for grouped and ungrouped data MCQs train multi-concept problem solving — attempt after mastering easy and medium sets (12+ on Goodmarks).
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Syllabus context
Part of Statistics and Probability in JEE Main Mathematics.
- Measures of dispersion; calculation of mean, median, mode of grouped and ungrouped data
- Calculation of standard deviation, variance and mean deviation for grouped and ungrouped data
- Probability: Probability of an event, addition and multiplication theorems of probability
- Baye's theorem, probability distribution of a random variable
Free sample questions
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Q2MathsUnit 13: Statistics and Probability
Find variance for following data:
frequency ey 6 8
Q3MathsUnit 13: Statistics and Probability
The variance of observations
112,116,120,125,132 is
Q4MathsUnit 13: Statistics and Probability
The variance of the data
6,8,10,12,14,16,18,20,22,24 is
Q5MathsUnit 13: Statistics and Probability
Variance remains unchanged by change
of
Q6MathsUnit 13: Statistics and Probability
The ages (in years) of a family of 6 members are 1,5,12,15,38 and 40 The standard deviation is found to be 15.9
After 10 years the standard deviation is
Q7MathsUnit 13: Statistics and Probability
Which of the following are dimensionless
Q8MathsUnit 13: Statistics and Probability
Assertion
If i.e.
then
Reason
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Popular questions in Calculation of standard deviation, variance and mean deviation for grouped and ungrouped data
- The mean deviation of the data \( \mathbf{2}, \mathbf{9}, \mathbf{9}, \mathbf{3}, \mathbf{6}, \mathbf{9}, \mathbf{4} \) …
- In an experiment with 15 observations on \( x, \) then following results were available: \( \sum x^{2}=2830, \sum x=170 …
- The variance of observations 112,116,120,125,132 is…
- Which of the following are dimensionless…
- Assertion If \( \boldsymbol{r}_{\boldsymbol{x} \boldsymbol{y}} \) i.e. \( \boldsymbol{r}(\boldsymbol{x}, \boldsymbol{y})…
- The variance of the data 6,8,10,12,14,16,18,20,22,24 is…
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