Math, asked by ritisha2602, 5 hours ago

The mean of 8 observations is 30. By mistake, one observation is registered as 30
instead of 38. Find the correct mean.

Answers

Answered by ganeshborse8c26

1

Answer:

Incorrect mean of 9 observations =35

Incorrect sum of observations =35×9=315

Since, 81 is misread as 18.

So, correct sum of observations

=315−18+81=378

∴ Correct mean =

9

378

=42

Previous Question

Next Question

Similar questions

Math, 3 hours ago

In a train there are 236 frist class seats and 848 second class seats. What is the total number of seats in the train...

Math, 3 hours ago

The product of any 2 irational no. is :...

Accountancy, 3 hours ago

what is the formula for calculating sacrificing ratio...

Math, 5 hours ago

the length,breadth and hight of cuboid are in the ratio 5:4:2.if the total surface area is 1216 cm square,find the dimensions of the cuboid ...

Hindi, 5 hours ago

पत्र लिखने समय हमें किन किन चीजों का ध्यान रखना चाहिए...

Math, 7 months ago

a card is drawn from a random of 52 well shuffled cards. find the probability that the card drawn is i) king of a black suit ,ii) picture card iii) card of diamonds ...

English, 7 months ago

Suppose you are the poet coates Kinney. You lie in your bed chamber listening to the patter of the rain. Many memories of your childhood occupy your mind. Write a paragraph about 100-150 words about the most important experience that you recollect. Please answer fast.

Social Sciences, 7 months ago

Power sharing is a good way to ensure the stability of: 1.population 2.political order 3.both 1.and 2 4.None of the above.