Home
Class 8
MATHS
AM of 8 observations 30.One observation ...

AM of 8 observations 30.One observation 30 is deleted from the data then the new mean is______

A

20

B

30

C

10

D

90

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • FREQUENCY DISTRIBUTION TABLES AND GRAPHS

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|133 Videos

  • FACTORISTION

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|182 Videos

  • LINEAR EQUATIONS IN ONE VARIABLE

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|223 Videos

Similar Questions

Explore conceptually related problems

AM of 11 observations is 17.5 and one observation 15 is deleted from the data then the mean of remaining observations is______

The mean of a data set consisting of 20 observation is 40. If one observation 53 was wrongly recorded as 33, then the correct mean will be

Mean of eight observations is 25. If one observation 11 is excluded, the mean of the remaining.

The variance of 20 observations is 5. If each observations is multiplied by 2, then the new variance of the resulting observations is

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

Arithmetic mean of 7 observations was found to be 32. If one more observation 48 was to be added to the data what would be the new mean of the data?

Consider the following statements : (i) Mean of 100 observations is 50 and standard deviation is 10. If 5 is added to each observation the new mean and standard deviation are 55, 10. (ii) Mean of 100 observations is 50 and standard deviation is 10. If each observation is multiplied by 3 then the new mean and standard deviation are 50, 10/3. The true statements are :

I. The geometric mean of 2,4,16 and 32 is a II. The strength of 7 colleges in a city are 385, 1748, 1343, 1935, 786, 2874 , 2108. Then the median strength is b. II. The algebric sum of the deviations of 20 observations measured from 30 is 2. The mean of these observations is c.