/104
69

SantΓ© Publique Preparation (Dr. Tol Bunkea)

 

1 / 104

1)

In inferential statistics, we study

2 / 104

2)

What is the correct statement of negative predictive value (NPV) of a screening test:

3 / 104

3)

The width of a confidence interval will decrease when which of the following changes occur:

4 / 104

4)

What is the correct statement of specificity of a screening test:

5 / 104

5)

The standard error of the mean of a sample is:

6 / 104

6)

Which statement is not true about confidence intervals?

7 / 104

7)

What is the probability of getting an odd number when you roll a dice?

8 / 104

8)

What is the correct answer about a point estimatestatement:

9 / 104

9)

What is the correct statement of validity of a screening test:

10 / 104

10)

The width of a confidence interval is influenced by:

11 / 104

11)

What is the correct statement of positive predictive value (PPV) of a screening test:

12 / 104

12)

The Negative Predictive Value was 98% means that:

13 / 104

13)

The Positive Predictive Value was 40% means that:

14 / 104

14) Confidence intervals are calculated for proportions, rates, risk ratios, odds ratios, and other epidemiologic measures:

15 / 104

15)

If the variance of a data set is correctly computed with the formula using n – 1 in the denominator, which of the following is true?

16 / 104

16)

Which below statement is not correct:

17 / 104

17)

All statements below are correct to describe the positive predictive value of a screening test except one:

18 / 104

18)

In descriptive statistics, we study:

19 / 104

19)

On the statements below which are validstatements of probability:

20 / 104

20)

On the statements below which are valid statements of probability:

21 / 104

21)

Which of these is most likely to happen?

22 / 104

22)

In statistics, a population consists of

23 / 104

23)

A screening test result for cervical cancer show that NPV= 99%. It means that:

24 / 104

24)

The director of the blood bank wants to know whether blood donors who test positive should be informed of their positive HIV status on the basis of this test. What do you need to calculate in order to help you advise the director?

25 / 104

25)

If a specificity of a screening test was 89%, it means that:

26 / 104

26)

Which answer below is not correct about the confidence interval:

27 / 104

27)

In a study of Cambodian people over 65 years of age, it is found that 255 have heart disease and 2302 do not. If a Cambodian over 65 years of age is randomly selected, what is the estimated probability that he or she has heart disease:

28 / 104

28)

What is the correct interpretation of 95% confidence interval below:

29 / 104

29)

A normal distribution curve is determined by the (chose the correct answer):

30 / 104

30)

What is the statement of sensitivity of a diagnostic test:

31 / 104

31)

Which of the following statements is true about the standard error of a proportion?

32 / 104

32)

ΞΌ is an example of a

33 / 104

33)

The branch of biostatistics that deals with testing of hypothesis, making predictions using data collected is called:

34 / 104

34)

If a negative predictive value was 98%, it means that:

35 / 104

35)

Chose the incorrect statement describe the diagnostic test:

36 / 104

36)

If the penalty for missing a case is high (e.g., the disease is fatal and treatment exists, or disease easily spreads) the best diagnostic test is:

37 / 104

37)

A population parameter is likely to occur (chose the correct answer):

38 / 104

38)

On the statements below what is valid statements of probability:

39 / 104

39)

The width of a confidence interval is influenced by:

40 / 104

40)

Population census is conducted through

41 / 104

41)

Which branch of statistics deals with the techniques that are used to organize, and summarize and simplify data:

42 / 104

42)

When data are collected in a statistical study for only a portion or subset of all elements of interest we are using

43 / 104

43)

If an event is impossible it has a probability of:

44 / 104

44)

On the statements below which are validstatements of probability:

45 / 104

45)

What is the statement of positive predictive value of a diagnostic test:

46 / 104

46)

When the new drug was clinically tested, 117 patients reported headaches and 617 did not. Based on this sample what is the probability that a new drug user will experience a headache:

47 / 104

47)

Students had attended a blood donor session at the University of Health Science when a new donor arrived. Blood can be classified into 4 groups: O, A, B and AB. The table below shows the number of people in each blood group. What is the probability that the next donor belongs to blood group O?

48 / 104

48)

The Positive Predictive Value of a test increases:

49 / 104

49)

The height of a student is 1.62 meters. This is an example of:

50 / 104

50)

If we want higher chance of error we could calculate (chose the correct answer):

51 / 104

51)

The negative predictive value of a test decreases:

52 / 104

52)

Since the population size is always larger than the sample size, then the sample statistic

53 / 104

53)

A confidence interval is describe (chose the correct answer):

54 / 104

54)

αžŸαŸ’αžαž·αžαž·αžœαž·αž‘αŸ’αž™αžΆ (statistics) αž˜αžΆαž“αž…αŸ‚αž€αž…αŸαž‰αž‡αžΆ

55 / 104

55)

αžαžΎαž’αŸ’αžœαžΈαžαŸ’αž›αŸ‡αž‡αžΆαž•αŸ’αž“αŸ‚αž€αžšαž”αžŸαŸ‹ Descriptive statistics?

56 / 104

56)

What is the correct interpretation of 95% confidence interval below:

57 / 104

57)

A confidence interval estimate is (chose the correct answer):

58 / 104

58)

What is the correct statement of sensitivity of a screening test:

59 / 104

59)

In descriptive statistics, we study:

60 / 104

60)

Which below statement is not correct:

61 / 104

61)

Which answer below is correct about the confidence interval:

62 / 104

62)

In statistics, a sample mean:

63 / 104

63)

What is the correct answer about a point estimatestatement:

64 / 104

64)

On the statements below what is valid statements of probability:

65 / 104

65)

Statistic is a numerical quantity, which is calculated from:

66 / 104

66)

A numerical value used as a summary measure for a sample, such as sample mean, is known as a

67 / 104

67)

What is the correct statement of screening test:

68 / 104

68)

A group of 100 people are asked to state their favourite colour. 60 say blue. This experiment says that the probability of someone choosing blue is:

69 / 104

69)

What is the correct answer about a point estimate statement:

70 / 104

70)

What is the correct statement of diagnostic test:

71 / 104

71)

The Positive Predictive Value depends on:

72 / 104

72)

Below is the common screening test except one:

73 / 104

73)

Positive Predictive Value primarily depends on (chose the incorrect answer):

74 / 104

74)

What is the statement of negative predictive value of a diagnostic test:

75 / 104

75)

The meaning of reliability of a test is:

76 / 104

76)

A negative predictive value of a test decreases as:

77 / 104

77)

If we want less chance of error we could calculate (chose the correct answer):

78 / 104

78)

Reliability of a test means that:

79 / 104

79)

If an event has a probability of 0.1 it is:

80 / 104

80)

The upper bound and lower bound of confidence interval are calculated using (chose the correct answer):

81 / 104

81)

If a positive predictive value was 44%, it means that:

82 / 104

82)

If the diagnostic (confirmatory) test is expensive or invasive the best diagnostic test is:

83 / 104

83)

You asked five of your classmates about their height. On the basis of this information, you stated that the average height of all students in your university or college is 1.67 meters. This is an example of:

84 / 104

84)

Which below statement is not correct:

85 / 104

85)

The standard error of the mean of a sample is:

86 / 104

86)

If a sensitivity of a screening test was 80%, it means that:

87 / 104

87)

What is the statement of specificity of a diagnostic test:

88 / 104

88)

The primary reason for selecting a sample from a population is:

89 / 104

89)

αžαžΎαž’αŸ’αžœαžΈαžαŸ’αž›αŸ‡αž‡αžΆαž•αŸ’αž“αŸ‚αž€αžšαž”αžŸαŸ‹ Descriptive statistics?

90 / 104

90)

Which below statement is not correct:

91 / 104

91)

A screening test result for cervical cancer show that PPV= 67%. It means that:

92 / 104

92)

Which of the statements is true if a particular event has a probability of 10%?

93 / 104

93)

We measure the sample using statistics in order to:

94 / 104

94)

What is the correct interpretation of 95% confidence interval below:

95 / 104

95)

What is the wrong interpretation of 95% confidence interval:

96 / 104

96)

A positive predictive value of a test increases as:

97 / 104

97)

A parameter is a measure which is computed from

98 / 104

98)

All statements below are correct to describe the negative predictive value of a screening test except one:

99 / 104

99)

If an event has a probability of 0.8 it is:

100 / 104

100)

What is the correct answer about a confidence interval statement:

101 / 104

101)

A positive predictive value depend on:

102 / 104

102)

Which below statement is not correct:

103 / 104

103)

The factors that determine the width of a confidence interval are except one:

104 / 104

104)

A positive predictive value depend on:

Your score is

The average score is 79%

0%

Any comments?