Math, asked by varinder7263, 10 months ago

· 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?
(a) 18
(b) 20
(c) 21
(d) 22

Answers

Answered by kiyara01

3

Answer:

c) 20

Step-by-step explanation:

hope it will help you.

Previous Question

Next Question

Similar questions

English, 5 months ago

the method of finding ibfs by opportunity cost...

Math, 5 months ago

Draw the graph of linear equation 3x-7y=21. Check whether (8,1) is a solution of the given equation or not.

Science, 5 months ago

The tropical rainforest has a large population of animals. Explain why it is so?

Math, 10 months ago

a rectangular field is 72 m by 58 m amar walks round it at the rate of 3 km per hour. what time will he take in taking 2 rounds? answer is 10 min 24 sec how?

Math, 10 months ago

3-7×0.2÷14=!? please give answer...

Social Sciences, 1 year ago

What is the dimension of basketball court for Olympics and World Tournaments? a) 26m x 14m. b) 28m x 15m. c) 27m x 16m. d) 28m x 16m.

Math, 1 year ago

Draw ∆abc given ab=9cm angle cab=115°.locatge its incentre and also draw the incircle.(note.you can check from the about examples that the incentre of any triangle is always in its interior).

CBSE BOARD X, 1 year ago

Write a quadratic polynomial with zeros of 2+root3 and 2root3...