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SantΓ© Publique Preparation (Dr. Tol Bunkea)

 

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1)

Which below statement is not correct:

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2)

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

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3)

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

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4)

In statistics, a sample mean:

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5)

What is the correct answer about a point estimate statement:

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6)

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

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7)

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

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8)

A parameter is a measure which is computed from

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9)

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

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10)

Reliability of a test means that:

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11)

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

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12)

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

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13)

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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14)

The width of a confidence interval is influenced by:

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15)

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

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16)

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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17)

Statistic is a numerical quantity, which is calculated from:

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18)

Which of these is most likely to happen?

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19)

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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20)

Which below statement is not correct:

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21)

In inferential statistics, we study

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22)

A positive predictive value depend on:

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23)

Which answer below is correct about the confidence interval:

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24)

Which statement is not true about confidence intervals?

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25)

In descriptive statistics, we study:

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26)

What is the statement of specificity of a diagnostic test:

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27)

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

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28)

What is the correct answer about a confidence interval statement:

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29)

What is the statement of sensitivity of a diagnostic test:

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30)

In statistics, a population consists of

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31)

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

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32)

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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33)

ΞΌ is an example of a

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34)

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

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35)

What is the correct statement of diagnostic test:

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36)

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

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37)

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

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38)

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

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39)

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

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40)

The standard error of the mean of a sample is:

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41)

Population census is conducted through

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42)

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

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43)

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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44)

If an event has a probability of 0.8 it is:

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45)

A negative predictive value of a test decreases as:

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46)

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

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47)

Below is the common screening test except one:

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48)

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

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49)

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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50)

The standard error of the mean of a sample is:

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51)

A positive predictive value depend on:

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52)

The meaning of reliability of a test is:

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53)

Which answer below is not correct about the confidence interval:

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54)

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

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55)

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

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56)

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

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57)

What is the wrong interpretation of 95% confidence interval:

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58)

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

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59)

Chose the incorrect statement describe the diagnostic test:

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60)

A positive predictive value of a test increases as:

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61)

What is the correct statement of screening test:

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62)

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

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63)

On the statements below which are valid statements of probability:

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64)

On the statements below what is valid statements of probability:

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65)

The Positive Predictive Value depends on:

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66)

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

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67)

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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68)

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

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69)

We measure the sample using statistics in order to:

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70)

On the statements below which are validstatements of probability:

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71)

The width of a confidence interval is influenced by:

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72)

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

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73)

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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74)

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

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75)

If an event is impossible it has a probability of:

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76)

What is the correct answer about a point estimatestatement:

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77)

In descriptive statistics, we study:

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78)

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

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79)

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

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80)

The Positive Predictive Value of a test increases:

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81)

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

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82)

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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83)

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

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84)

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

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85)

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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86)

On the statements below what is valid statements of probability:

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87)

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

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88)

If an event has a probability of 0.1 it is:

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

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90)

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

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91)

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

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92)

The negative predictive value of a test decreases:

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93)

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

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94)

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

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95)

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

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96)

Which below statement is not correct:

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97)

The Negative Predictive Value was 98% means that:

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98)

Which below statement is not correct:

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99)

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

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100)

On the statements below which are validstatements of probability:

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101)

Which below statement is not correct:

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102)

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

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103)

The Positive Predictive Value was 40% means that:

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104)

What is the correct answer about a point estimatestatement:

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