Deck 16: Quantitative Data Analysis

Question 1

Which of the following types of data analysis allows the researcher to describe and summarize the characteristics of a sample?

A) Inferential statistics
B) Descriptive statistics
C) Nonparametric statistics
D) Mathematical statistics

Answer 1

Descriptive statistics

Question 2

Which of the following parametric statistical tests compares the difference between mental status scores for patients with dementia (Group 1)and those for patients with confusion from dehydration (Group 2)?

A) The t test
B) Pearson Product Moment Correlation Coefficient
C) Chi-square
D) Meta-analysis

Answer 2

The t test

Question 3

What do measures of central tendency describe?

A) How reliably the findings can be generalized
B) The amount of dispersion in the sample
C) The accuracy of predictions made
D) The average member of the sample

Answer 3

The average member of the sample

Question 4

Which of the following levels of measurement provides the greatest flexibility in choosing statistical procedures?

A) Nominal
B) Ordinal
C) Interval
D) Ratio

Question 5

What level of measurement would a type of nursing degree be considered?

A) Nominal
B) Ordinal
C) Interval
D) Ratio

Question 6

Which of the following terms describes the assignment of numbers to objects or events?

A) Prediction
B) Dispersion
C) Variability
D) Measurement

Question 7

The change in heart rate in patients with diabetes mellitus was reported as 10.95 ± 9.21 for the Adult type 1 group.How many standard deviations from the mean is a change of 23?

A) 1 SD
B) 2 SD
C) 3 SD
D) 4 SD

Question 8

Which of the following types of data analysis allows researchers to estimate how reliably data can be used to generalize the findings of a study?

A) Inferential statistics
B) Descriptive statistics
C) Nonparametric statistics
D) Mathematical statistics

Question 9

A measure of death anxiety resulted in a mean score of 5.4 with a standard deviation of 1.6.Where would 34% of the scores fall?

A) Between 2.2 and 8.6
B) Between 3.8 and 7.0
C) Between 3.8 and 5.4
D) Between 5.4 and 8.6

Question 10

What conclusion can be drawn from statistics that indicate that the average cost of a house in a specific neighbourhood is $150,000,the range is $48,000 to $2,000,000,the median house cost is $98,000,and the mode is $90,000?

A) The standard deviation is small.
B) The mode can be calculated from the median.
C) The cost of a "typical" house in this neighbourhood is $150,000.
D) The mean does not reflect the true housing cost in this neighbourhood.

Question 11

What level of measurement is indicated by the following categories of weight class for boxing?
Lightweight 57-61 kilograms
Welterweight 62-67 kilograms
Middleweight 67-72 kilograms
Heavy middleweight 73-80 kilograms

A) Nominal
B) Ordinal
C) Interval
D) Ratio

Question 12

What is indicated by a score reported to be in the 75th percentile?

A) The score is at the median.
B) The score has exceeded the mode.
C) The score is exceeded by only 25% of the cases.
D) The score represents the average of all scores measured at this time.

Question 13

In a study about the willingness of nurses to provide care to patients with AIDS,it was found that the deeper the nurses' spirituality,the greater was the willingness to provide care.What type of correlation does this finding represent?

A) No correlation
B) Perfect correlation
C) Positive correlation
D) Negative correlation

Question 14

In a study about how women adjust to living with breast cancer,the youngest participant was 23 years old and the oldest participant was 89 years old.What do these facts represent?

A) Mean age
B) Modal age
C) Median age
D) Range in age

Question 15

What is the characteristic that determines the assignment of a number to an object for measurement?

A) The object must vary within a narrow range to meet category requirements.
B) All objects assigned a specific measurement number must be similar to all other objects assigned the same number.
C) The objects assigned to one specific number must be positively related to the dependent variable of the study.
D) The objects assigned to one specific number must be positively related to the independent variable of the study.

Question 16

Which of the following terms represents the middle score in a frequency distribution?

A) Mean
B) Mode
C) Median
D) Percentile

Question 17

Factor analysis is used to:

A) statistically control for a variable and measure differences among group means.
B) take a large number of variables and group them into a smaller number of factors.
C) test the relationship between two variables measured at interval or ratio level data.
D) measure the relationship between one outcome or dependent variable and several dependent variables.

Question 18

Which of the following alpha levels can be interpreted as a highly statistically significant result?

A) p = .20
B) p = .02
C) p = .002
D) p = .0002

Question 19

What is indicated by a correlation?

A) The most frequently occurring score
B) Variability of scores from the mean
C) Range of the middle 50% of the scores
D) Magnitude and direction of the relationship between variables

Question 20

What specific type of statistic is exemplified by the percentage of nurses holding various nursing degrees?

A) Inferential statistics
B) Descriptive statistics
C) Nonparametric statistics
D) Mathematical statistics