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All the students of a class performed po...

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 ?

A

mean

B

median

C

mode

D

variance

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Knowledge Check

  • All the students of a class perfomed poorly in mathematic. The techer decided to give grace marks of 10 to every student Which of the following statistical measure will not change even after the grace marks were given ?

    A
    median
    B
    mode
    C
    mean
    D
    variance

  • A student is performing an experiment unsing a resonance column and a tuning fork of frequency 224 s^(-1) . He is told that the air in the tube has been replaced by another gas (assume that the column remains filled with the gas) . If the minimum height at which resonace occurs is ( 0 . 350 pm 0 . 005) m , the gas in the tube is (using information : 1 sqrt( 167 RT) = 649 J^(-1//2) * mol ^(-1//2) , sqrt(140 RT) = 590 J^(1 //2) * mol ^(-1//2) . The molar masses M in grams are given in the opeions . take the value of sqrt((10/(M)) for each gas as given there)

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    B
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    C
    oxygen ` (M = 32 sqrt((10)/(32)) = (9)/(16))`
    D
    argon ` (M = 36 sqrt(( 10)/(36)) = (17)/(32))`

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