A student has obtained 75%, 80% and 855 ...

A student has obtained 75%, 80% and 855 in three subjects. If the marks of another subject are added then his average can not be less than

0.6

0.65

0.8

0.9

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AAKASH SERIES-MEASURES OF DISPERSION (STATISTICS)-Exercise - II

In a class of 100 students there are 70 boys whose average marks in a ...
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The average marks of boys in a class is 52 and that of girls is 42. Th...
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A student has obtained 75%, 80% and 855 in three subjects. If the mark...
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If bar(x)(1) and bar(x)(2) are the means of two distribution such that...
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A distribution consists of three components with frequencies 300, 200 ...
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The mean marks got by 300 students in the subject of statistics was 45...
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The minimum value (x-6)^(2) + (x + 3)^(2) + (x-8)^(2) + (x + 4)^(2) + ...
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If a variable takes the discrete values alpha + 4, alpha - (7)/(2), al...
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The minimum value |x-6| + |x+3| + |x-8|+|x-4|+|x-3| is
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If in a frequency distribution, the mean and median are 21 and 22 resp...
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The starting value of the model class of a distribution is 20. The fre...
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If M(g,x) is the geometric mean of N x's and M(g,y) is the geometric m...
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If the Arithmetic mean and Geometrical mean of three numbers are equal...
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A car completes the first half of its journey with a velocity V(1) and...
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An automobile driver travels from plane to a hill station 120 Km dista...
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A cyclist covers his first three miles at an average speed of 8 m.p.h....
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If the mean deviation of the number 1, 1+d, 1+2d,….,1+100 d from their...
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The sum of 10 items is 12 and sum of their squares is 18, then standar...
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In a series of 2n observatiobs, half of them equal to a and remaining ...
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If sum(i=1)^(18) (x(i) - 8) = 9 and sum(i=1)^(18) (x(i) - 8)^(2) = 45...
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