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For a frequency distribution standard de...

For a frequency distribution standard deviation is computed by applying the formula `(a) sigma=sqrt((sumfd^2)/(sumf)-((sumfd)/(sumf))^2)` ` (b) sigma=sqrt(((sumfd^2)/(sumf))-(sumfd^2)/(sumf))` `(c) sigma=sqrt((sumfd^2)/(sumf)-(sumfd)/(sumf))` `(d) sqrt(((sumfd)/(sumf))^2-(sumfd^2)/(sumf))`

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For a frequency distribution standard deviation is computed by applying the formula (a) sigma=sqrt((sumfd^2)/(sumf)-((sumfd)/(sumf))^2) (b) sigma=sqrt(((sumfd)/(sumf))^2-(sumfd^2)/(sumf)) (c) sigma=sqrt((sumfd^2)/(sumf)-(sumfd)/(sumf)) (d) sigma=sqrt(((sumfd)/(sumf))^2-(sumfd^2)/(sumf))

For a frequency distribution mean deviation from mean in computed by: (a) MdotDdot = (sumf)/(sumf|d|) (b) MdotDdot=(sumd)/(sumf) (c) MdotDdot=(sumfd)/(sumf) (d) MdotDdot=(sumf|d|)/(sumf)

For a frequency distribution mean deviation from mean in computed by (a) MdotDdot=(sumf)/(sumf|d|) (b) MdotDdot=(sumd)/(sumf) (c) MdotDdot=(sumfd)/(sumf) (d) MdotDdot=(sumf|d|)/(sumf)

The standard deviation of first 11 nutural numbers is (i) 2 (ii) 2sqrt2 (iii) 3 (iv) sqrt10

If the mean of a frequency distribution is 8.1 and sumf_i x_i=132+5k ,\ \ sumf_i=20 , then k= (a) 3 (b) 4 (c) 5 (d) 6

The mean of a discrete frequency distribution x_i//f_i ; i=1,\ 2,\ ddot,\ n is given by (a) (sumf_i x_i)/(sumf_i) (b) 1/n\ sum_(i=1)^nf_i x_i (c) (sumi=1nf_i x_i)/(sumi=1n x_i) (d) (sumi=1nf_i x_i)/(sumi=1n i)

Show that the two formulae for the standard deviation of ungrouped data: sigma=sqrt(1/nsum(x_i- barX )^2) a n d\ sigma^(prime)=sqrt(1/nsumx_i^2- barX ^2) are equivalent where barX =1/nsumx_i .

If standard deviation of 1,2,3,4,….,10 is sigma then standard deviation of 11, 12, …20 is

Is the following computation correct? If not give the correct computation : sqrt((-2))sqrt((-3))=sqrt((-2)(-3))=sqrt((-6))

Compute the following: sqrt(-25)+3sqrt(-4)+2sqrt(-9)

RD SHARMA ENGLISH-TABULAR REPRESENTATION OF STATISTICAL DATA -All Questions
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  2. The marks obtained by 35 students in an examination are given below:...

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  3. For a frequency distribution standard deviation is computed by applyin...

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  4. Given below are the ages of 25 students of class IX in a school. Pr...

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  5. Form a discrete frequency distribution from the following scores: 1...

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  6. The water tax bills (in rupees) of 30 hours in a locality are given...

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  7. Form a grouped frequency distribution from the following data by in...

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  8. The maximum temperature (in degrees celcius) and relative humidity (in...

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  9. The marks obtained by 40 students of class IX in an examination are...

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  10. The weights in grams of 50 oranges picked at random from a consignm...

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  11. The class marks of a distribution are: 17,52,57,62,67,72,77,82,87,9...

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  12. For the following data of daily wages (in rupees0 received by 30 la...

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  13. The class marks of a distribution are 26,31,36,41,46,51,56,61,66,71...

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  14. What do you understand by the word “statistics” in (i) singular form...

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  15. Describe some fundamental characteristic of statistics.

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  16. Why do we group data?

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  17. Explain the meaning of the following terms: variate         (ii)...

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  18. The ages of ten students of a group are given below: The ages have ...

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  19. The monthly pocket money of six friends is given below: Rs. 45, Rs....

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  20. Write the class-size in each of the following: 0-4,5-9,10-14 10-19,...

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