The following values are calculated in respect of marks of the students of sections A and B of Class X- Section A Section B Mean 85 92 Variance 81 64 The marks of which section have more variability-A- Section BB- Section AC- Both section are equal variableD- Cannot be determined

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Standard XI

Statistics

Absolute and Relative Measures of Dispersion

The following...

Question

The following values are calculated in respect of marks of the students of sections A and B of Class X:

The marks of which section have more variability?

Section B

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Section A

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Both section are equal variable

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Cannot be determined

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Solution

The correct option is B
Section A

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Marks obtained in a test by X standard students of two sections A and B are given below:

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No. of students in

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30 – 35

35 – 40

40 – 45

45 – 50

Determine: (i) Which section’s performance is better? And (ii) Which section’s performance is more variable?

Given below are the marks obtained by 10 students. For getting promoted to section A, a student has to score more than the average marks. Which student will not be promoted to Section A?

$\begin{matrix} Name & Marks & Name & Marks Pavani & 79 & Ajit & 77 Goutham & 81 & Kushagra & 73 Deepthi & 68 & Manish & 94 Pavan & 85 & Satyam & 81 Akash & 62 & Sarosh & 80 \end{matrix}$

Q. In a school there are two sections - section A and section B of class X. There are 32 students in section A and 36 students in section B. Determine the minimum number of books required for their class library so that they can be distributed equally among students of section A or section B. [4 MARKS]

Q. Calculate Combined Mean:

Section	Mean Marks	No. of Students
A	75	50
B	60	60
C	55	50

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The following values are calculated in respect of marks of the students of sections A and B of Class X: The marks of which section have more variability?

The correct option is B Section A

The following values are calculated in respect of marks of the students of sections A and B of Class X:

The marks of which section have more variability?

The correct option is B
Section A