JEE Main 2015 · 4 Apr · Shift 1 · Mathematics Q87

← JEE Main 2015 · 4 Apr · Shift 1

MathematicsSingle correct+4 / -1Question 87 of 90

The mean of the data set comprising of 16 observations is 16. If one of the observation valued 16 is deleted and three new observations valued 3, 4 and 5 are added to the data, then the mean of the resultant data, is :

16.8

16.0

15.8

14.0

Answer and worked solution

Official answer: D

Sum $=16\times16-16+3+4+5=252$ over $16-1+3=18$ observations: mean $=14$ .

Topics:Measures of central tendency

← Previous question Next question →

JEE Main 2015 · 4 Apr · Shift 1, Mathematics question 87