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Statistics for Economics>Chapter 6 - Correlation>Q 2

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Look at the following table. Calculate r between the annual growth of national income at the current price and the Gross Domestic Saving as a percentage of GDP.

Annual growth of nation(X) $14$ $17$ $18$ $17$ $16$ $12$ $16$ $11$ $8$ $10$

Gross domestic saving as a percent of GDP(Y) $24$ $23$ $26$ $27$ $25$ $25$ $23$ $25$ $24$ $23$

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Important Questions on Correlation

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11th CBSE

IMPORTANT

Statistics for Economics>Chapter 6 - Correlation>Q 3

Using the following data related to India’s population in billions and national income in a trillion, calculate the correlation between them using the step deviation method.

India’s population(X)	$50$	$60$	$70$	$80$
National income(Y)	$45$	$50$	$55$	$60$

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Statistics for Economics>Chapter 6 - Correlation>Q 4

Following data on marks scored by $10$ of your classmates in class IX and X examinations. Calculate the rank correlation coefficient between them.

Subjects	Marks of class $9^{t h} (X)$	Marks of class $10^{t h} (Y)$
Hindi	$90$	$81$
English	$80$	$85$
Maths	$95$	$100$
Economics	$60$	$55$

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11th CBSE

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Statistics for Economics>Chapter 6 - Correlation>Q 5

The unit of correlation coefficient between height in feet and weight in kgs is

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Statistics for Economics>Chapter 6 - Correlation>Q 6

The range of simple correlation coefficient is

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Statistics for Economics>Chapter 6 - Correlation>Q 7

If

r_{x y}

is positive the relation between

X

and

Y

is of the type

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Statistics for Economics>Chapter 6 - Correlation>Q 8

If

r_{x y} = 0

the variable

X

and

Y

are

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Statistics for Economics>Chapter 6 - Correlation>Q 9

Of the following three measures which can measure any type of relationship?

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11th CBSE

IMPORTANT

Statistics for Economics>Chapter 6 - Correlation>Q 10

If precisely measured data are available the simple correlation coefficient is

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Annual growth of nation(X)	$14$	$17$	$18$	$17$	$16$	$12$	$16$	$11$	$8$	$10$
Gross domestic saving as a percent of GDP(Y)	$24$	$23$	$26$	$27$	$25$	$25$	$23$	$25$	$24$	$23$

Look at the following table. Calculate r between the annual growth of national income at the current price and the Gross Domestic Saving as a percentage of GDP. Annual growth of nation(X) 14 17 18 17 16 12 16 11 8 10 Gross domestic saving as a percent of GDP(Y) 24 23 26 27 25 25 23 25 24 23

Important Questions on Correlation

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