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SantΓ© Publique Preparation (Dr. Tol Bunkea)

 

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1)

A positive predictive value of a test increases as:

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2)

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

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3)

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

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4)

If an event is impossible it has a probability of:

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5)

On the statements below what is valid statements of probability:

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6)

What is the correct answer about a point estimate statement:

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7)

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

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8)

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

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9)

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

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10)

Chose the incorrect statement describe the diagnostic test:

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11)

On the statements below which are validstatements of probability:

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12)

What is the correct answer about a confidence interval statement:

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13)

What is the statement of specificity of a diagnostic test:

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14)

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

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15)

A positive predictive value depend on:

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16)

Reliability of a test means that:

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17)

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

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18)

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

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19)

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?

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20)

Which answer below is correct about the confidence interval:

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21)

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

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22)

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

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23)

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

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24)

Which below statement is not correct:

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25)

A negative predictive value of a test decreases as:

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26)

On the statements below which are validstatements of probability:

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27)

The Negative Predictive Value was 98% means that:

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28)

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

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29)

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

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30)

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

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31)

The width of a confidence interval is influenced by:

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32)

Which below statement is not correct:

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33)

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

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34)

The Positive Predictive Value depends on:

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35)

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

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36)

A parameter is a measure which is computed from

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37)

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

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38)

What is the statement of sensitivity of a diagnostic test:

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39)

Statistic is a numerical quantity, which is calculated from:

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40)

A positive predictive value depend on:

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41)

Which statement is not true about confidence intervals?

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42)

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

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43)

Population census is conducted through

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44)

In statistics, a sample mean:

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45)

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

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46)

Which of these is most likely to happen?

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47)

ΞΌ is an example of a

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48)

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

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49)

The meaning of reliability of a test is:

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50)

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

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51)

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

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52)

What is the correct answer about a point estimatestatement:

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53)

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

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54)

The standard error of the mean of a sample is:

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55)

The Positive Predictive Value was 40% means that:

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56)

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

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57)

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

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58)

In inferential statistics, we study

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59)

The negative predictive value of a test decreases:

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60)

What is the correct statement of diagnostic test:

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61)

If an event has a probability of 0.1 it is:

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62)

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:

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63)

What is the correct statement of screening test:

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64)

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

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65)

In descriptive statistics, we study:

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66)

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

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67)

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

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68)

Which below statement is not correct:

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69)

In statistics, a population consists of

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70)

If an event has a probability of 0.8 it is:

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71)

The width of a confidence interval is influenced by:

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72)

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:

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73)

The standard error of the mean of a sample is:

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74)

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

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75)

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

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76)

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

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77)

We measure the sample using statistics in order to:

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78)

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:

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79)

Below is the common screening test except one:

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80)

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

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81)

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:

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82)

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

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83)

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

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84)

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

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85)

On the statements below what is valid statements of probability:

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86)

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

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87)

The Positive Predictive Value of a test increases:

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88)

Which answer below is not correct about the confidence interval:

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89)

In descriptive statistics, we study:

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90)

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?

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91)

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

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92)

What is the correct answer about a point estimatestatement:

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93)

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

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94)

Which below statement is not correct:

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95)

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:

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96)

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

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97)

What is the wrong interpretation of 95% confidence interval:

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98)

On the statements below which are valid statements of probability:

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99)

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?

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100)

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

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101)

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

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102)

Which below statement is not correct:

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103)

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

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

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