STA100 Final Term MCQs

Final Syllabus

1. 10! = 3628800

2. The player well shuffles the pack of 52 playing card, then the probability of a black card from 52 playing cards is: 13/52

3. The probability of drawing a ‘jack card ‘from 52 playing cards is: 4/2

4. Which dispersion is used to compare variation of two series? Q.D

5. All the values fall on the same straight line and the line has a positive slope then what will be the value of the correlation coefficient ‘r’: r = +1
6. Regression line Y= a + bX, the value of the correlation coefficient will be zero if: Intercept a = 0

7. When two coins are tossed the probability of at least one head is: 3/4

Q8. Which one of the following measurement does not divide a set of observations into equal parts?

curve has a longer tail to the right, it is called : standard deviations

9. the model Y = mX + a, Y is also known as the: Predicted variable

10. According to empirical rule approximately 95% of the measurements will

fall under which interval? X=2S

11. Which one of the following is written at the top of the table? Title

12. The curve has a longer tail to the right, it is called: Positively skewed

13. Which one of the following is the class frequency? The number of observations in each class

14. If X f(x) is a discrete random variable, then the function: A distribution function

15. Which one of the following graphs is used for a time series data? Histogram

Q16. If you connect the mid-points of rectangles in a histogram by a series of lines that also touches the x-axis from both ends, what will you gets?

17. If mean of the two observations is 10.5, then median of these two observations will be: 10.5

Mr. Ahsan · STA100 · 18. Which one is the formula of mid range: x0xm/2

19. Which one of the following is not included in measures of central tendency: Quartile deviation

20. For the given data 2, 3, 7, 0, -8 G. M will be: Undefined

21. For a particular data the value of Pearson’s coefficient of skewness is greater then zero. What will be the shape of distribution? Positively skewed

22. In measures of relative dispersion unit of measurement is: Vanish

23. The F-distribution always ranges from: 0 to +∞

24. In chi-square test of independence the degrees of freedom are: n – p

25. The Chi- Square distribution is continuous distribution ranging from: 0 ≤ χ2≤ ∞

26. If X and Y are random variables, then E ·  X ·  Y ·  is equal to: E ·  X ) ·  E(Y

27. If ŷ is the predicted value for a given x-value and b is the y-intercept then the equation of a regression line for an independent variable x and a dependent variable y is: ŷ = mx + b, where m = slope

28. The location of the critical region depends upon: Alternative hypothesis

29. The t-Distribution is………..Spread out then the standard normal Distribution. More

30. To find the confidence internal for the ratio of two variances we use: F-

31. How many percent of values are less then 4th deciles in a symmetric

32. The combined distribution of more than two random variables is: Joint

33. The degrees of freedom for a T-test with sample size 14 is: 13

34. Which of the falling is true for the binomial distribution b(x: n, p): Mean > Variance

35. What is m f in the formula of mode? highest frequency

36. The parameters of the binomial distribution b(x; n, p) are: n & p

37. Which of the following is true for the Poisson distribution: mean = variance

38. If a significance level of 1% is used rather than 5%, the null hypothesis is: Less likely to be rejected

39. The variance of the chi-square distribution is: 2v

40. The degrees of freedom for a t-test with sample size 10 is: 9

41. The value of χ2can never be : Negative

42. The total number of samples when sampling is done with replacement : Nn

43. ANOVA was introduced by : R.A Fisher

44. The test statistic used in analysis of variance procedure follow the .................................................................................. distribution.: F

45. For testing of hypothesis about population proportion , we use: Z-test

46. A die is rolled. What is the probability that the number rolled is greater than 2 and even: 1/3 2/6 =1/3

47. The probability of drawing a king of spade from a pack of 52 cards is:

48. An estimator T is said to be unbiased estimator of ·  if E (T) = · 49. From point estimation, we always get: Single value

50. The best unbiased estimator for population variance: Sample variance

51. When c is a constant, then E(c) is: c

52. Var(4X + 5) = 16 Var (X) + 5

53. When f(x) is continuous probability function, then P(X = 1) is: 0

54. The hyper geometric random variable is a(an): Discrete variable

55. From a sample of 200 people were asked whether they like a particular product. Fifty said 'yes' and remain said 'no', assuming ‘yes’ means a success, which of the following is correct? Sample proportion p=0.25

56. In any data set, what percent of values fall in the interval Median

 Q.D?

50 per cent · 57. 5 ·  Xi ·  20 ·  0, then X ·  0 · i ·  1

58. The height of a student is 60 inches. This is an example of? Continuous data

59. In Statistics, we have MSE which is abbreviation of? Mean square error

60. The deviation of a distribution from symmetry is called: Skewness

61. If E is an impossible event, then P(E) is: 0

62. If a data set has the even number of observations, the median : Is the average value of the two middle items when all items are arranged in ascending order

63. In testing of hypothesis, we always begin it with assumig that: Null

64. If a continuous probability distribution has

 2

 2.14 then what will be peakedness of the distribution? Platykurtic

65. When each outcome of a sample space has equal chance to occur as any other, the outcomes are called: Equally likely