Test 1:

1.)As sample size increases:

A)The sampling error decreases

B)The sample becomes more biased.

C)The validity of the investigation increases.

D)The population becomes more accessible.

2.)Which of the following has been labeled with a correct measuring scale?

A)Severity of a disease: interval

B)Hospital room number: ordinal

C)The number of heart beats per minute: ratio

D)Self-rating of anxiety levels on a five-point scale: nominal

3.)Which of the following statements is/are true about sampling error?

I.The greater the sample size, the smaller the probability of sampling error.

II.Sampling error is reflected in the discrepancy between the true population parameter and the sample statistic.

A)I onlyB) II onlyC) both I and IID) neither I nor II

4.)Given the following three independence ratings on a five-point scale for three clients A, B and C: A = 1, B = 2, C=5. Which of the following statements is/are true?

I.Client B is twice as independent as A.

II.Client C is more independent than either A or B.

A)I onlyB) II onlyC) both I and IID) neither I nor II

5.)The problem with drawing a representative sample of subjects with clinical conditions such as agoraphobia (fear of open spaces) is that:

I.Complete lists of sufferers names are usually not available.

II.The subjects who consent to participate may be unrepresentative of the target population.

A)I onlyB) II onlyC) both I and IID) neither I nor II

6.)The reading " 64 kilograms " is a value on a(n):

A) Interval scaleB) Nominal scaleC) Ordinal scaleD) Ratio scale

7.)Which of the following is NOT a form of probability sampling?

A) Convenience B) PurposiveC) QuotaD) Systematic

8.)In a patient records system, patients are randomly assigned a unique identification number. These numbers represent a(n):

A) Interval scaleB) Nominal scaleC) Ordinal scaleD) Ratio scale

9.)Which of the following statements is/are true?

I.Discrete variables are qualitative variables.

II.Quantitative variables can be continuous variables.

A)I onlyB) II onlyC) both I and IID) neither I nor II

10.)Which of the following will give a more accurate representation of the population from which a sample has been taken?

A)A small cluster sample.

B)A small sample based on stratified sampling.

C)A large sample based on purposive sampling.

D)A large sample based on simple random sampling.

II. Performance Tasks:

Consider your clan (family and relatives) as the population. List the members of your population and draw a sample consisting of at least 20 members using one of the following sampling techniques:

a)Simple Random Samplingb) Systematic Samplingc) Stratified Sampling

Write report or write-up discussing how you obtained the sample using the method.

Submit the list of the units in the population and samples together with your report/write-up.