EASY
10th Tamil Nadu Board
IMPORTANT
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When the standard deviation is divided by the we get the coefficient of variation. [Mean / Median / Mode]

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Important Questions on Statistics And Probability

EASY
10th Tamil Nadu Board
IMPORTANT
If the mean and standard deviation of a data are 8 and 2, respectively, then the coefficient of variation is _____ percent.
EASY
10th Tamil Nadu Board
IMPORTANT
When comparing two data, the data with _____ coefficient of variation is inconsistent.    (higher/lower/constant)
EASY
10th Tamil Nadu Board
IMPORTANT
The standard deviation and mean of a data are 6.5 and 12.5 respectively. If the coefficient of variation is k% then find the value of k.
 
EASY
10th Tamil Nadu Board
IMPORTANT
The standard deviation and coefficient of variation of a data are 1.2  and 25.6 respectively. Find the value of mean (up to two decimal places).
EASY
10th Tamil Nadu Board
IMPORTANT
If the mean and coefficient of variation of a data are 15 and 48 respectively, then find the value of the standard deviation.
EASY
10th Tamil Nadu Board
IMPORTANT
If n=5, x=6,  Σx2=765, if the value of the coefficient of variation is k% then find the value of k. (upto two decimal places).
MEDIUM
10th Tamil Nadu Board
IMPORTANT
If the coefficient of variation of 24, 26, 33, 37, 29, 31 is k% then find the value of k.
MEDIUM
10th Tamil Nadu Board
IMPORTANT
The time taken in minutes to complete a homework by 8 students in a day are given by 38, 40, 47, 44, 46, 43, 49, 53. If the coefficient of variation is k% then find the value of k.