This question requires calculating the mode of a dataset using the empirical relation between mean, median, and mode.
The empirical relation connecting the mean, median, and mode for moderately skewed distributions is given by:
$Mode = 3 \times Median - 2 \times Mean$
$Mode = 3 \times (61) - 2 \times (47)$
$3 \times 61 = 183$
$2 \times 47 = 94$
$Mode = 183 - 94$
$Mode = 89$
The calculated mode of the data is 89.
The mean of five numbers is 30. If one number is excluded, their mean becomes 28. The excluded number is
The ‘less than’ ogive curve and the ‘more than’ ogive curve intersect at
The observations 4, 1, 4, 3, 6, 2, 1, 3, 4, 5, 1, 6 are outputs of 12 dices thrown simultaneously. If m and M are means of lowest 8 observations and highest 4 observations respectively, then what is (2m + M) equal to ?
The mean of the series x 1, x 2… x nis X̅. If x 2 is replaced by λ, then what is the new mean?
The mean of a group of 100 observations was found to be 20. Later it was found that four observations were incorrect, which were recorded as 21, 21, 18 and 20. What is the mean if the incorrect observations are omitted?