30 Questions
Which type of variables are all subjective rating scales considered to be?
Ordinal
What is the format typically used in Likert-scale variables?
1 to 5 scale
What is the main characteristic of ordinal-level variables?
They have a meaningful order but may not have uniform intervals.
Who originally developed the Likert scales?
Rensis Likert
When combining ordinal-level variables together, what type of variable does the composite become?
Ordinal
What is the purpose of Likert scales in health care quality studies?
To assess patient satisfaction and outcomes
What do frequency distribution tables provide?
A way of organizing data by using a table format
Why is it easier for readers to glean information from data organized into a table format?
It allows for quicker understanding of dispersion and outliers
From Table 2-2 in the text, why is it not immediately obvious where the middle of the distribution lies?
The data is unordered
How does organizing data into a table format help in understanding outliers?
Clearly highlights the outliers
What does a cumulative frequency column in a frequency distribution table show?
Running total of frequencies
Why are frequency distribution tables important for understanding data?
They allow readers to quickly grasp basic characteristics
What is a key advantage of stem-and-leaf plots?
Preserving individual values
In a stem-and-leaf plot, where is the smallest stem located?
At the top
Why are stem-and-leaf plots best used with small data sets?
Constructing them with large datasets is cumbersome
How are stems and leaves separated in a stem-and-leaf plot?
By a vertical line
What is the age range for diabetes onset in the sample provided in Table 2-5?
5 to 52 years
What is a strength of stem-and-leaf plots regarding the recording of data?
Recording each participant's value directly
What information does a frequency distribution table show?
Possible values of the variable grouped into class intervals along with raw and relative frequencies
Which of the following is NOT typically included in a frequency distribution table?
Median of the data
What does the term 'cumulative frequency' represent in a frequency distribution table?
Cumulative percentage up to the indicated range
In the given body weight data, which observation has a squared weight of 31,684?
17
What is the purpose of creating a frequency distribution table from data?
To simplify and organize data for easier interpretation
Which of the following is NOT typically shown in a frequency distribution table?
Outliers in the data
What is the difference between the largest and smallest values in a set of values known as?
Range
Which measure of dispersion is calculated by taking the square root of the variance?
Standard deviation
Which measure is considered more informative than the range in describing the variability of a set of values?
Standard deviation
What does skewness quantify in a dataset?
Asymmetry
Which measure is the sum of the squared differences between each value and the mean, divided by the number of values minus 1?
Variance
Which measure of dispersion is not as commonly used as the standard deviation?
Variance
Test your understanding of ordinal scales and Likert-scale variables used in research. This quiz covers topics like assigning ranks, subjective rating scales, and variables based on the Likert scale format.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
