Type if birth( vaginal or ceseran) is measured on the:

a. Nominal scale

b. Ratio Scale

c. Interval Scale

d. Ordinal Scale

A

Degree of pain measured as none, a little, or a lot is measured on which of the following scales?

a. Nominal

b. Interval

c. Ordinal

d. Ratio

C

Body temperature is measured on which of the following scales?

a. Nominal

b. Oridinal

c. Ratio

d. Interval

D

Which level of measurement communicates the most information?

a. Ordinal

b. Nominal

c. Interval

d. Ratio

D

Statistical methods that are used to draw conclusions about a population are called:

a. Univariate statistics

b. Descriptive statistics

c. Inferential statistics

d. Multivariate statistics

C

A major purpose of constructing a frequency distribution with sample data is to:

a. get experience with statistical software

b. get an organized view of an entire set of scores

c. test a research hypothesis

d. estimate a population parameter

B

In frequency distribution, the two key informational components are:

a. frequencies (f), percentages (%)

b. score values (X), frequencies(f)

c. a horizontal (X) axis, a vertical (Y) axis

d. participant ID number (id), score values (X)

B

In a frequency distribution, which of the following is true?

a. Ef= %

b. Ef=N

c. EN=%

d. EN=f

B

See table on Quiz 1

Table 1 is an example of a:

a. data matrix

b. frequency distribution

c. grouped frequency distribution

d. class interval

B

Table 1, the value of N is:

a. 215

b. 7

c. 100.0

d. 24

A

In table 1, the distribution of data would be described as:

a. positively skewed

b. symmetric

c. negatively skewed

d. It cannot be determined

A

the best way to graph information in table 1 would be construct:

a. histogram

b. a pie chart

c. either a pie chart or a bar graph

d. a bar graph

A

In table 1, the distribution of data would be described as:

a. Unimodal

b. Multimodal

c, Bimodal

d. It cannot be determined

A

In table 1, the cumulative relative frequency for five or fewer pregnancies is:

a. 97.6

b. 199

c. 92.5

d. 210

A

In table 1, the most likely number to be an outlier is:

a. 1

b. 0

c. 7

d. 24

C

Another Name for crosstab table is a:

a. scatterplot

b. relative risk table

c. frequency distribution

d. contingency table

D

In a 4 X 3 crosstab table, how may variables would there be?

a. 2

b. 12

c. 7

d. 4

D

In a 4 X 3 crosstab table, how many cells would there be?

a. 7

b. 2

c. 4

d. 12

D

Which measurement scale( s) are most amenable to crosstabulation?

a. Nominal, ordinal and interval

b. Nominal, ordinal, interval and ratio

c. Nominal only

d. Nominal and ordinal

D

A widely reported and intuitively appealing risk index for comparing risk outcomes is:

a. absolute risk (AR)

b. Odds ration (OR)

c. relative rish (RR)

d. Number needed to treat (NNT)

C

The risk index that corresponds to a cell percentage in a crosstab table is:

a. RRR

b. RR

C. AR

d. ARR

C

Pearson's r is an index that communicates:

a. correlation between two variables

b. relative risk

c. relative risk reduction

d. none of the above

A

If a scatterplot has data points that are tightly packed along a diagonal that slopes from the upper left to the lower right of the graph, the correlation between variable is:

a. weakly positive

b. strongly negative

c. strongly positive

d. weakly negative

B

Which of the following coefficients indicates the strongest relationship?

a. 0.0

b. .77

c. .50

d. -.89

B

A researcher found a correlation of -.24 between scores on a self-esteem scale and number of alcoholic drinks consumed in the prior month. what does this mean?

a. people who drank more alcohol had s sight tendency to have lower self-esteem

b. drinking more alcohol tended to cause lower self-esteem

c. people who drank more alcohol had a slight tendency to have higher self-esteem

d. having lower self-esteem tended to cause people to drink more alcohol

A

See Table in Quiz 2

Refer to table 4. what percentage of elders in this sample had a fall?

a. 25.05%

b. 85.7%

c. 20.0%

d. 14.3%

D

Refer to table 4> what numbers are in the denominator for calculating row percentages?

a. 40,100,140

b. 30,90,120

c. 20,120,140

d. 10,10,20

A

Refer to table 4. what percentage of people who fell were not cognitively impaired?

a. 10.0%

b. 14.3%

c. 50.0%

d. 0.0%

C

Refer to table 4, what was the absolute risk of falling for elders who were cognitively impaired?

a. .100

b. .500

c. .250

d. .143

C

Refer to table 4, in this example, what is the value of ARR?

a. .150

b. .250

c. .100

d. .500

A

A major purpose of constructing a frequency distribution with sample data is to:

a. get experience with statistical software

b. get an organized view of an entire set of scores

c. test a research hypothesis

d. estimate a population parameter

B

See table in Mid-term Exam

Table 1,is an example of a:

a. data matrix

b. frequency distribution

c. grouped frequency distribution

d. class interval

B

In table 1, the value of N is:

a. 215

b. 7

c. 100.0

d. 24

A

In table 1, the distribution of data would be described as:

a. positively skewed

b. symmetric

c. negatively skewed

d. It cannot be determined

A

The best way to graph information in table 1 would be to construct:

a. a histogram

b. a pie chart

c. either a pie chart or a bar graph

d. a bar graph

A

In table 1, the cumulative frequency for five or fewer pregnancies is:

a. 97.6

b. 199

c. 92.5

d. 210

A

In table 1, the most likely number to be an outlier is:

a.1

b. 0

c. 7

d. 24

C

Central tendency indexes are all of the following except which of the following statements?

a. they are descriptive statistics

b. they provide information about a value around which scores cluster

c. they are appropriate for interval- and ratio-level measures

d. they summarize how dispersed a set of scores is

D

In the following distribution ( 10 11 12 13 14 15 15 15) the mode is

a. 12

b. 14

c. 15

d. 11

C

In the following distribution ( 10 11 12 13 14 15 15 15) the median is:

a. 14

b. 15

c. 12

d. 11

A

The median is all of the following except:

a. the 50th percentile

b. the most popular score in the distribution

c. the point that divides a distribution in half

d. Q2

B

For which of the following set of numbers are the mean, the median and the mode the same value?

a. 11223344556677

b. 1233444445567

c. 11123344556777

d. All of the above

B

In which type of distribution is the median a smaller value than the mean?

a. a normal distribution

b. a positively skewed distribution

c. a leptokurtic distribution

d. a negatively skewed distribution

B

In calculating z scores ( standard scores), which two descriptive statistics are needed?

a. mean, range

b. median, percentiles

c. median, IQR

d. mean, SD

D

A z score of 0.00 corresponds to an original score that:

a. is the same as the mean in the original distribution

b. is the outlier

c. is the lowest score in the original distribution

d. could not be used in the calculation of the mean

A

Refer to table 2, of mid-term

For the variable body mass index, the variance is:

a. 27.0

b. 27.02

c. 36.0

d. 6.0

C

Refer to table 2, of mid-term

a, -1.0

b. 2.0

c. 0.0

d. 1.0

A