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Santé Publique Preparation (Dr. Tol Bunkea)

 

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1)

If an event is impossible it has a probability of:

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2)

In descriptive statistics, we study:

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3)

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

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4)

Which statement is not true about confidence intervals?

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5)

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

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6)

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

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7)

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

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8)

A positive predictive value of a test increases as:

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9)

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

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10)

If an event has a probability of 0.1 it is:

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11)

In statistics, a population consists of

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12)

Which below statement is not correct:

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13)

In statistics, a sample mean:

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14)

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

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15)

Which below statement is not correct:

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16)

What is the correct answer about a confidence interval statement:

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17)

The width of a confidence interval is influenced by:

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18)

A positive predictive value depend on:

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19)

What is the correct statement of diagnostic test:

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20)

តើអ្វីខ្លះជាផ្នែករបស់ Descriptive statistics?

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21)

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

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22)

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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23)

ស្ថិតិវិទ្យា (statistics) មានចែកចេញជា

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24)

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

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25)

The width of a confidence interval is influenced by:

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26)

What is the statement of sensitivity of a diagnostic test:

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27)

On the statements below which are validstatements of probability:

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28)

What is the statement of specificity of a diagnostic test:

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29)

Reliability of a test means that:

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30)

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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31)

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

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32)

What is the correct answer about a point estimatestatement:

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33)

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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34)

μ is an example of a

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35)

Chose the incorrect statement describe the diagnostic test:

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36)

The meaning of reliability of a test is:

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37)

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

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38)

Which of these is most likely to happen?

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39)

Which answer below is not correct about the confidence interval:

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40)

Population census is conducted through

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41)

The Positive Predictive Value of a test increases:

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42)

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

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43)

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

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44)

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

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45)

On the statements below which are valid statements of probability:

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46)

What is the correct answer about a point estimatestatement:

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47)

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

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48)

The Positive Predictive Value was 40% means that:

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49)

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

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50)

What is the wrong interpretation of 95% confidence interval:

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51)

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

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52)

The standard error of the mean of a sample is:

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53)

A parameter is a measure which is computed from

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54)

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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55)

The standard error of the mean of a sample is:

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56)

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

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

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58)

What is the correct statement of screening test:

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59)

In descriptive statistics, we study:

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60)

តើអ្វីខ្លះជាផ្នែករបស់ Descriptive statistics?

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61)

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

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62)

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

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63)

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

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64)

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

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65)

Which below statement is not correct:

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66)

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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67)

On the statements below which are validstatements of probability:

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68)

On the statements below what is valid statements of probability:

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69)

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

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70)

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

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71)

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

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72)

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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73)

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

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74)

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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75)

The negative predictive value of a test decreases:

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76)

The Negative Predictive Value was 98% means that:

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77)

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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78)

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

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79)

A positive predictive value depend on:

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80)

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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81)

Which answer below is correct about the confidence interval:

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82)

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

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83)

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

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84)

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

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85)

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

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86)

What is the correct answer about a point estimate statement:

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87)

In inferential statistics, we study

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88)

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

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89)

We measure the sample using statistics in order to:

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90)

Statistic is a numerical quantity, which is calculated from:

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91)

If an event has a probability of 0.8 it is:

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92)

Which below statement is not correct:

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93)

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

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94)

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

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95)

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

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96)

On the statements below what is valid statements of probability:

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97)

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

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98)

The Positive Predictive Value depends on:

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99)

Below is the common screening test except one:

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100)

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

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101)

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

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102)

A negative predictive value of a test decreases as:

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103)

Which below statement is not correct:

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104)

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

Your score is

The average score is 87%

0%

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