# BIO-STATISTICS Sample Paper

1. Statistics is a—————-

a. Science

b. trick

c. game

d. none of these

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2. The sum of deviations taken from mean is:

a. minimum

b. less than zero

c. zero

d. one

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3. The methods used to determine something about a population on the basis of a sample is called:

a. inferentail statistics

b. descriptive stats

c. applied stats

d. none of these

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4. When the variable studied can be reported numerically, the variable is called a:

a. independent

b. dependent

c. Quntitative

d. Qualitative

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5. Data that are collected by any body for some specific purpose and use are called:

a. primary data

b. secondary  data

c. discrete data

d. none of these

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6. The data which have under gone any treatment previously is called:

a. Secondary data

b. primary data

c. discrete data

d. none of these

.

7. Any phenomenon which is not measurable is called:

a. Attribute

b. variable

c. constant

d. none of these

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8. Statistics results are:

a. random true

b. always true

c. often true

d. True on average

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9. The probability of an event cannot be:

a. more than zero

b. less than 1

c. Less than zero

d. equal to zero

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10. A measure of the chance that an uncertain event will occur:

a. a trail

b. an experiment

c. probability

d. an event

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11. Two dice are rolled. Probability of getting similar faces is

a. 1\6

b. 5\36

c. 1\2

d. none of these

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12. Two dice are rolled. Probability of getting total less than 4 or total more than 10 is given by:

a. 14\36

b. 1\36

c. 4\36

d. 10\36

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13. If A and B are two mutually exclusive and exhaustive events and P(A)=2P(B), then P(B) is equal to:

a. 14\36

b. 1\3

c. 1\2

d. 2\3

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14. When two dice are rolled, the maximum total on the two faces of the dice will be:

a. 2

b. 12

c. 6

d. 36

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15. Which is the impossible event when a die is rolled:

a. 0 to 7

b. 1 to 6

c. 2 to 5

d. none of these

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16. Scores that differ greatly from the measures of central tendency are called:

a. extreme scores

b. raw scores

c. z-scores

d. none of these

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17. The total of all the observations divided by the number of observations is called:

a. H.M

b. median

c. A.M

d. G.M

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18. Mode of the letter STATISTICS:

a. A

b. S,T

c. S

d. T

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19. To find out the common diseases in 20 patients, suitable average is:

a. all of these

b. mode

c. median

d. mean

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20. The population mean µ is called:

a. statistic

b. sample

c. papulation

d. paramater

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21. The arithmetic mean is highly affected by:

a. all of these

b. extreme scores

c. raw scores

d. z-scores

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22. The sum of deviations taken from mean is:

a. more than zero

b. minimum

c. zero

d. less than one

.

23. mean of 20 same values is 10 then the sum of all these values:

a. 200

b. 20

c. 100

d. none of these

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24. Ten families have an average of 2 boys. How many boys do they have together:

a. 20

b. 10

c. 15

d. none of these

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25. We must arrange the data before calculating:

a. mode

b. G.M

c. median

d. mean

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26. If the data contains an extreme value, the suitable average is:

a. mode

b. H.M

c. median

d. mean

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27. Suitable average for averaging the shoe sizes for children is

a. mean

b. G.M

c. mode

d. median

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28. scatterness of the values around the mean values is called:

a. average

b. mean deviation

c. range

d. dispersion

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29. to compare more than two items suitable measure of dispersion is:

a. S.D

b. mean deviation

c. C.V

d. variamce

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30. variance of 4,4,4,4,4,4,4,,4 is

a. 0

b. 4

c. 44

d. none of these

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31. If all the scores on examination cluster around the mean, the dispersion is said to be:

a. ab-normal

b. small

c. large

d. normal

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32. Which of the following is an absolute measure of dispersion?

a. S.D

b. c.v

c. cofficient of M.D

d. none of these

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33. The measure of dispersion which uses only two observations is called

a. all of these

b. Range

c. S.D

d. mean deviation

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34. The range of the scores 29, 3, 143, 27, 99 is:

a. 140

b. 143

c. 130

d. none of these

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35. The sum of absolute deviations is minimum if these deviations are taken from the

a. mode

b. G.M

c. median

d. mean

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36. The average of squared deviations from mean is called

a. S.D

b. mean deviation

c. range

d. variance

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37. Which of the following is a unit free quantity:

a. S.D

b. mean deviation

c. C.V

d. variance

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38. if mean= Rs.20, S= Rs.10, then coefficient of variation is

a. 0.55

b. 0.5

c. 0.6

d. 0.45

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39. A relationship where the flow of the data points is best represented by a curve is called:

a. negative linear

b. no relationship

c. Linear relatioship

d. normal relationship

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40. In simple linear regression, the numbers of unknown constants are:

a. two

b. more than two

c. at least two

d. none of these

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41. In simple regression equation, the numbers of variables involved are

a. 3

b. two

c. 0

d. 1

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42. If the value of any regression coefficient is zero, then two variables are:

a. independent

b. dependent

c. correlation

d. none of these

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43. Range of correlation always lie between:

a. 0 to 1

b. none of these

c. 1 to 6

d. 1 to 2

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44. paramater of binomial distribution are:

a. n and p

b. n,p and q

c. p and q

d. none of these

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45. The χ2-test should not be used if any expected frequency is:

a. less than 5

b. more than 5

c. exact 5

d. none of these

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46. The shape of the Chi-square distribution is:

a. symmetrical

b. all of these

c. poistively skewed

d. negatively skewed

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47. in negative binomial distribution probability of success:

a. less than trails

b. more than trails

c. equl to trails

d. none of these

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48. A statement about a population developed for the purpose of testing is called:

a. alternative hypo

b. level of sig

c. Hypothesis

d. null hypothesis

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49. A hypothesis may be classified as

a. simple hypo

b. composite hypo

c. null hypo

d. all of the above

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50. A rule or formula that provides a basis for testing a null hypothesis is called:

a. level of sig

b. all of these

c. Test statistic

d. degree of freedom