The mean of 100 observations is 50. If one of the observation which was 50 is replaced by 150 then what will be the resulting mean?

Asked by Last Modified  

45 Answers

Learn Mathematics +1 Class IX-X Tuition

Follow 37
Answer

Please enter your answer

Tutor

Average gets increased by 1.
Comments

Tutor

51
Comments

Maths Tutor

Comments

Observed value diff =100 Mean of observed diff=100/100(no of observation)=1 So new mean =51
1 Comments

T. value=100*50=5000 Observation increased =150-50=100 New value= 5000+100=5100 New mean=5100/100=51 Alternate method Increase in observed value =150-50=100 Mean of new observed= 100/100=1 So new mean = 50+1=51
Comments

Maths Teacher

51
Comments

Tutor

51
Comments

Tuition

51
Comments

Tuition

51
Comments

Economics Professor

The total mean of 100 observations = 100X50 = 5000 Add correct obs and minus wrong obs from total i.e. 5000-50+150= 5100 new mean= 5100/50= 102
Comments

View 43 more Answers

Related Questions

Factorize: (m * n) + (p * n) + m * q + p * q?
Step 1: Group terms like they’re forming a band: Step 2: Factor common stuff: Step 3: Combine like a Bollywood duo:
Profile Photo
Jagabandhu
Solve : 55x + 52y = 217; 52x + 55y = 217
subtract two equations from each other, we get x=y and then substitute x=y in any of the equation we get values for x and y . x=1.972 ,y= 1.972
Profile Photo
Deepak
0 0
View Comments8
Given that HCF (161,345) = 23, find their LCM.
N¹ *N² = LCM * HCF 161 *345 =23 * N² N² =2415
Profile Photo
A
Write four solutions of 2x 3y = 8.
2x 3y=8 X=1 and y=8/6 X=8/6 and y=1 X=-1 and y=(-8)/6 X=(-8)/6 and y=-1
Profile Photo
Gayathri
0 0
View Comments6

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Recommended Articles

Appearing for exams could be stressful for students. Even though they might have prepared well, they could suffer from anxiety, tension etc. These are not good for their health and mind. However, following a few exam preparation tips can save them from all these and help them to score good marks. Let’s find out all...

Read full article >

While schools provide formal education to the children, the home is where they start learning about things informally. Parents think that schools will take the initiative to educate their children. Well, this is partially true, as parents also play an essential role in bringing up their child. For the development of particular...

Read full article >

Learning for every child starts from a very young age. While the formal methods include school curriculums and private lessons, the informal methods include dancing, music, drawing, and various fun-filling activities. Playing games and practising these types of activities helps the children get out of boredom and...

Read full article >

With the mushrooming of international and private schools, it may seem that the education system of India is healthy. In reality, only 29% of children are sent to the private schools, while the remaining head for government or state funded education. So, to check the reality of Indian education system it is better to look...

Read full article >

Looking for Class 9 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you