Q. 85.0( 1 Vote )

# The arithmetic me

Given that, arithmetic mean of 10 numbers = -7

We know, total number of observations, n = 10

Then, mean is given by

Sum of all observations = 10 × -7 = -70

According to question, if 5 is added to every 10 number then,

New sum of all observations = Old sum + (5 × 10)

New sum = -70 + 50 = -20

New mean = -2

Thus, option (A) is correct.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Mode44 mins
Frequency Distribution Table58 mins
Graphs42 mins
Median58 mins
Mean61 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses
RELATED QUESTIONS :

The mean of 15 nuTamilnadu Board Math Term-II

The mean of 20 nuTamilnadu Board Math Term-II

The mean of 5 numTamilnadu Board Math Term-II

The arithmetic meTamilnadu Board Math Term-II

The mode of the dTamilnadu Board Math Term-II

| The mean of theTamilnadu Board Math Term-II

The following tabTamilnadu Board Math Term-II

The mean of firstTamilnadu Board Math Term-II

The median of 2,7Tamilnadu Board Math Term-II

Find the mean, moTamilnadu Board Math Term-II