1800-150-456-789
FlagBACK
Flag Algebra> All the students of a class performed poo...
question mark

All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks of 10 to each of the students. Which of the following statistical measures will not change even after the grace marks were given ? (1) median (2) mode (3) variance (4) mean

aditya kashyap , 10 Years ago
Grade upto college level
anser 1 Answers
Swetha

Last Activity: 10 Years ago

variance will not change. because variance is proportional to (x - mean). x is marks of a student. now if every student`s marks are increased by 10, mean also increases by 10. so variance remains constant

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...

Other Related Questions on Algebra

question mark
What is a binomial expression?
Algebra
1 Answer Available

Last Activity: 10 Month ago(s)

question mark
Can we divide two vectors? If this is possible then how?
Algebra
1 Answer Available

Last Activity: 10 Month ago(s)

question mark
How do you write “the product of 18 and q” as an algebraic expression?
Algebra
1 Answer Available

Last Activity: 10 Month ago(s)

question mark
दहावीच्या आय सी एस इ विद्यार्थ्यांनी पुढे काय करायला पाहिजे
Algebra
0 Answer Available

Last Activity: 1 Year ago(s)

question mark
Find the least number of square tiles by which the floor of a room of dimensions 16.58 m and 8.32 m can be covered completely. why HCF and not LCM as “least” keywor dis given?
Algebra
1 Answer Available

Last Activity: 2 Year ago(s)