**1. Statistics is a—————-**

a. Science

b. trick

c. game

d. none of these

Correct Answer: __a__

.

**2. The sum of deviations taken from mean is:**

a. minimum

b. less than zero

c. zero

d. one

Correct Answer: __c__

.

**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

Correct Answer: __a__

.

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

a. independent

b. dependent

c. Quntitative

d. Qualitative

Correct Answer: __c__

.

**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

Correct Answer: __a__

.

**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

Correct Answer: __a__

.

**7. Any phenomenon which is not measurable is called:**

a. Attribute

b. variable

c. constant

d. none of these

Correct Answer: __a__

.

**8. Statistics results are:**

a. random true

b. always true

c. often true

d. True on average

Correct Answer: __d__

.

**9. The probability of an event cannot be:**

a. more than zero

b. less than 1

c. Less than zero

d. equal to zero

Correct Answer: __c__

.

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

a. a trail

b. an experiment

c. probability

d. an event

Correct Answer: __c__

.

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

a. 1\6

b. 5\36

c. 1\2

d. none of these

Correct Answer: __a__

.

**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

Correct Answer: __b__

.

**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

Correct Answer: __b__

.

**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

Correct Answer: __b__

.

**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

Correct Answer: __a__

.

**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

Correct Answer: __a__

.

**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

Correct Answer: __c__

.

**18. Mode of the letter STATISTICS:**

a. A

b. S,T

c. S

d. T

Correct Answer: __b__

.

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

a. all of these

b. mode

c. median

d. mean

Correct Answer: __b__

.

**20. The population mean µ is called:**

a. statistic

b. sample

c. papulation

d. paramater

Correct Answer: __d__

.

**21. The arithmetic mean is highly affected by:**

a. all of these

b. extreme scores

c. raw scores

d. z-scores

Correct Answer: __b__

.

**22. The sum of deviations taken from mean is:**

a. more than zero

b. minimum

c. zero

d. less than one

Correct Answer: __c__

.

**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

Correct Answer: __a__

.

**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

Correct Answer: __a__

.

**25. We must arrange the data before calculating:**

a. mode

b. G.M

c. median

d. mean

Correct Answer: __c__

.

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

a. mode

b. H.M

c. median

d. mean

Correct Answer: __c__

.

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

a. mean

b. G.M

c. mode

d. median

Correct Answer: __c__

.

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

a. average

b. mean deviation

c. range

d. dispersion

Correct Answer: __d__

.

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

a. S.D

b. mean deviation

c. C.V

d. variamce

Correct Answer: __c__

.

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

a. 0

b. 4

c. 44

d. none of these

Correct Answer: __a__

.

**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

Correct Answer: __b__

.

**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

Correct Answer: __a__

.

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

a. all of these

b. Range

c. S.D

d. mean deviation

Correct Answer: __b__

.

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

a. 140

b. 143

c. 130

d. none of these

Correct Answer: __a__

.

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

a. mode

b. G.M

c. median

d. mean

Correct Answer: __c__

.

**36. The average of squared deviations from mean is called**

a. S.D

b. mean deviation

c. range

d. variance

Correct Answer: __d__

.

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

a. S.D

b. mean deviation

c. C.V

d. variance

Correct Answer: __c__

.

**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

Correct Answer: __b__

.

**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

Correct Answer: __c__

.

**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

Correct Answer: __a__

.

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

a. 3

b. two

c. 0

d. 1

Correct Answer: __b__

.

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

a. independent

b. dependent

c. correlation

d. none of these

Correct Answer: __a__

.

**43. Range of correlation always lie between:**

a. 0 to 1

b. none of these

c. 1 to 6

d. 1 to 2

Correct Answer: __b__

.

**44. paramater of binomial distribution are:**

a. n and p

b. n,p and q

c. p and q

d. none of these

Correct Answer: __a__

.

**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

Correct Answer: __a__

.

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

a. symmetrical

b. all of these

c. poistively skewed

d. negatively skewed

Correct Answer: __c__

.

**47. in negative binomial distribution probability of success:**

a. less than trails

b. more than trails

c. equl to trails

d. none of these

Correct Answer: __a__

.

**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

Correct Answer: __c__

.

**49. A hypothesis may be classified as**

a. simple hypo

b. composite hypo

c. null hypo

d. all of the above

Correct Answer: __d__

.

**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

Correct Answer: __c__

.