Deck 11: Data Analysis

Question 1

When making a statistical decision, the researcher fails to reject the null hypothesis if the value of p is < alpha.

Answer 1

False

Question 2

Clinicians should be familiar with and have the ability to understand, and or, use statistics to evaluate the value of research articles that will promote evidenced-based practice.

Answer 2

True

Question 3

Nominal and ordinal data are considered types of continuous data?

Answer 3

False

Question 4

Ratio and interval data are considered two higher levels of measurement that require the most sophisticated statistical analysis.

Question 5

Standard deviation is the difference between the highest and lowest scores in the data set.

Question 6

The standard deviation is the most commonly reported measure of variability.

Question 7

The t-test is the most common parametric test used that allows for a comparison of the means of the two groups.

Question 8

Analysis of covariance (ANCOVA) is a variant of ANOVA that allows for an adjustment of extraneous, additional, or undesired variables.

Question 9

What is a primary objective when evaluating data analysis of a study?

A) Familiarize yourself with the study's types of data
B) Understand how the study's conclusions flow from the results and statistical tests
C) Both Familiarize yourself with the study's types of data & Understand how the study's conclusions flow from the results and statistical tests
D) None of these

Question 10

Which is the most basic level of measurement?

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

Question 11

Which is an example of an ordinal measurement?

A) Temperature
B) Likert scale
C) Eye color
D) Blood pressure

Question 12

Which is an example of a ratio measurement?

A) Weight
B) Preference scales
C) Temperature
D) None of these

Question 13

Which two measurements are considered measures of central tendency?

A) Median and range
B) Standard error and standard deviation
C) Mode and mean
D) All of these

Question 14

Which measure can be calculated for nominal, ordinal, ratio, and interval data?

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

Question 15

A clinical trial on the effectiveness of a new diabetic medication for children under 12 was completed at a local hospital. As the dosage increased, the participants' glucose level decreased. Which type of shape would be represented by this sample?

A) Normal
B) Skewed Positive
C) Skewed Negative
D) Platykurtic

Question 16

To use nonparametric statistical tests, which principle must be assumed?

A) Distribution that is not normal
B) Typically used with ratio and interval data
C) Both Distribution that is not normal & Typically used with ratio and interval data are true
D) None of these are true

Question 17

When studying the relationship between test performance and length of sleep (the night befor e), which type of measurement is being examined?

A) Mode
B) Standard Deviation
C) t-test
D) Measure of association

Question 18

Which type of data provides the strongest statistical analysis in a well-designed study?

A) Nominal
B) Ratio
C) Correlational
D) Descriptive

Question 19

Which test is used to examine the strength of the linear relationship between two interval or ratio variables?

A) Mann-Whitney
B) Regression analysis
C) Tukey
D) Pearson's product moment

Question 20

Which statistic is used to measure multiple independent variables?

A) Chi-squared
B) t-test
C) Kendall's rank correlation
D) MANOVA

Question 21

What type of data is visual acuity?

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

Question 22

Which of the following is the most frequently used statistic to report variability?

A) Standard Deviation
B) Square Root
C) Interquartile range
D) Complete range

Question 23

Which of the following tests hypotheses using nominal (categorical) data?

A) Chi Square
B) t-test
C) Mean Comparisons
D) Correlation

Question 24

Which of the following requires nonparametric analysis?

A) Normally distributed data
B) Unequal variance
C) Ratio scaled data
D) Multiple variables

Question 25

Which of the following tests can be used with ordinal data?

A) Tukey
B) ANOVA
C) Regression
D) Mann-Whitney

Question 26

Which test is used to compare the results of multiple related groups?

A) Tukey
B) Repeated Measures ANOVA
C) Linear Regression
D) None of these

Question 27

Which of the following descriptive statistics is a population (not sample) statistic?

A) Standard deviation
B) Standard error of the mean
C) Square root of the variance
D) Variance

Question 28

Which statement is true regarding meta-analysis?

A) Meta-analysis is a type of process used to for statistical integration of the results of several studies to reach an independent conclusion.
B) It is precise, rigorous, and quantifies the decision making about a question
C) Both Meta-analysis is a type of process used to for statistical integration of the results of several studies to reach an independent conclusion and It is precise, rigorous, and quantifies the decision making about a question are true
D) None of these are true