LCHI 478 Exam 2

T/F: A histogram should be used with discrete data that is part of a frequency distribution.

False: A histogram should be used with continuous data

T/F: A bubble chart is similar to a scatter chart except that it compares three data variables.

True

Pie charts are best utilized to represent ___________________ data. a. Nominal b. Ordinal c. Quantitative d. Qualitative

a. Nominal

What graphical technique tends to offer the least accurate and efficient interpretation? a. Presenting data along non-aligned scales b. Shading and color saturation c. Presenting the area of a group of data d. Using length, direction, and angle

a. Presenting data along non-aligned scales

When displaying data in a chloropleth, the data should always be ___________ rather than __________. a. Rates; totals b. Totals; rates c. Nominal; ordinal d. Ordinal; nominal

a. Rates; totals

What type of data representation is defined when data must be analytically processed in order to extract information? a. Symbolic b. Spatial c. Tabular d. Exploratory

a. Symbolic

Tara's new boss has demanded that she create a dashboard for the CEO of the company ASAP. Tara knows that she has a pre-made dashboard designed for ICU nurses already prepared and she is considering providing this dashboard to her boss for the CEO. What is the biggest issue with Tara's choice to do this? a. Tara is not considering the experience of the user b. Tara is not considering the context of the situation c. Tara has not chosen the correct type of graph d. Tara is providing too complex of data for the CEO to interpret

a. Tara is not considering the experience of the user

_____________________ is a difficulty in making decisions due to the presence of excessive amounts of information. a. Graphical perception b. Information overload c. Data visualization d. Experience

b. Information overload

Ochsner Lafayette General would like to benchmark their HAC rates against another organization to see how they compare. Which organization is the most logical choice to compare against? a. Bunkie Hospital b. Our Lady of Lourdes c. Cleveland Clinic d. MD Anderson

b. Our Lady of Lourdes

George is the data analyst for Scuba Scott Medical Center and has been tasked with creating a data visualization to represent the amount of male vs. female patients with lung cancer during the month of February. Which chart provides the best representation of this data? a. Bar graph b. Pie chart c. Line graph d. Contingency table

b. Pie chart

A scatter plot is most appropriate for displaying: a. Counts by categories b. Relationships between two continuous variables c. Relationships between two nominal variables d. Proportions of a whole

b. Relationships between two continuous variables

Gina creates a dashboard for the end-of-month review of the revenue cycle for the revenue department every month. These dashboards are an example of ____________ dashboards. a. Continuous b. Static c. Contextual d. Complex

b. Static

This type of data display are excellent ways to organize and categorize data and can be useful to examine the detail of a specific concept, category, or response. a. Bar graphs b. Tables c. Pie charts d. Pareto chart

b. Tables

What does the height of each bar that makes up a histogram represent? a. The average of a numeric value b. The frequency or density of a specific range of a numeric values c. The number of values that range from zero to one d. The range of numeric values

b. The frequency or density of a specific range of a numeric values

Candace, the HIM coordinator at a private practice, has been asked to create a chart displaying the amount of current patients per 10 year age groups, (up to age 100) at the practice. Which graph best suits this data representation? a. Line graph b. Pie chart c. Bar graph d. Scatter plot

c. Bar graph

The manager of the Louisiana Department of Health wants to create a visualization that displays the cases of lung cancer in each of the parishes. Which graph is best to represent this data? a. Bar graph b. Line graph c. Chloropleth d. Scatter plot

c. Chloropleth

Healing Hands Hospital released a study detailing that, on a given day, 84 out of their 653 inpatient patients were documented as having an HAC, a rate of 12.86%. The hospital has calculated a ___________________________ rate for their HAC's. a. Inicidence b. Prevalence c. Point prevalence d. Period prevalence

c. Point prevalence

Which of the following is a space-efficient way of showing the value of multiple variables in an organized fashion that makes sense to the reader? a. Venn diagram b. Bar chart c. Radar chart d. Heat map

c. Radar chart

The key to building which statistical tool is to make it able to stand alone so anyone reading it can understand the information displayed? a. Graph b. Plot c. Table d. Measure of central tendency

c. Table

Which of the following is most concerning regarding the use of AI to develop clinical summaries for patients? a. The amount of money it will cost to implement b. The time it will take for us to develop this technology c. The AI's ability to discern the correct, most relevant information d. The concern doctor's may face over AI becoming advanced enough to perform their jobs for them

c. The AI's ability to discern the correct, most relevant information

Which of the following is used to display the differences and overlap between two or more variables? a. Bar graph b. Line graph c. Venn diagram d. Heat map

c. Venn diagram

Which chart is best for showing changes to a total, but can make seeing changes in specific components difficult? a. Isotype b. Bar chart c. Marimekko d. Area chart

d. Area chart

Which is a simple chart used to describe qualitative, categorical, or discrete variables such as nominal or ordinal data? a. Line graph b. Pie chart c. Frequency polygon d. Bar chart

d. Bar chart

Misty's boss has requested that she provide a report detailing the amount of clinic visits that have unpaid balances for the month of October. Her boss has requested that she present the data in a manner in which they can view specific data points easily for certain visits, as well as in a manner that it is easy to see which type of clinic visit has the highest amount of unpaid balances. Given this information, how should Misty provide this data to her boss? a. In a table b. In a graph c. Either is appropriate d. Both

d. Both

Which of the following is NOT a tool used to facilitate analytics in healthcare? a. Clinical decision support b. Dashboards c. Clinical summaries d. Brainstorming

d. Brainstorming

Which of the following graphical methods is used for presenting data using color and saturation? a. Bar chart b. Pie chart c. Dot plot d. Heat map

d. Heat map

Brandy developed a dashboard for the various executives at Jingle Bells Medical Center, but has been advised by her supervisor that the dashboard is too busy and difficult to understand because of the amount of data present on it. Brandy's supervisor is experiencing ______________________________ because of the dashboard. a. Graphical perception b. Data visualization c. Health illiteracy d. Information overload

d. Information overload

A pie chart is most appropriate for displaying: a. Counts by categories b. Relationships between two continuous variables c. Relationships between two nominal variables d. Proportions of a whole

d. Proportions of a whole

Melinda has been asked to create a graph displaying the relationship between LOS in the hospital (in days) and the amount of comorbidities or complications a patient has. Which graph best suits this data representation? a. Line graph b. Pie chart c. Chloropleth d. Scatter plot

d. Scatter plot

_________________________ refers to the process of taking what is known at the highest level of understanding and working downward to identify the underlying causes for the high-level observation. a. Dashboard b. Data analytics c. Data visualization d. Slicing and dicing

d. Slicing and dicing

Which of the following is used for hierarchical part-to-whole relationships but can be difficult to read when there are many small segments? a. Radar chart b. Venn diagram c. Histogram d. Tree map

d. Tree map

T/F: A line graph is a graphical device used to display continuous data and to show changes or trends of the data over time.

True

T/F: A scatter plot is used to demonstrate a relationship between two variables.

True

Which of the following rates would adequately describe the observed number of deaths in a community? a. 20/10,000 b. 20/100,000 in January 2000 c. 0/1,000 d. 1,000/20 in January 2000

b. 20/100,000 in January 2000

Which is a preferred method for presenting a large number of groups of data in descending order? a. Dot plot b. Bar chart c. Pie chart d. Line chart

b. Bar chart

Which of the following is similar to a scatterplot, but adds additional detail using the sizing of shapes according to a third variable? a. Radar chart b. Bubble chart c. Venn diagram d. Marimekko

b. Bubble chart

Which of the following is the standard way to display a statistical distribution and highlights the "shape" of the data? a. Bar graph b. Histogram c. Line graph d. Chloropleth

b. Histogram

In general, when utilizing a bar chart, the categorical data is best displayed on the __________ axis a. Vertical b. Horizontal c. Diagonal d. Z

b. Horizontal

Which rate described the number of new cases of an illness for a specific time period? a. Mortality rate b. Incidence rate c. Morbidity rate d. Prevalence rate

b. Incidence rate

What type of data representation is defined when information can be viewed at a glance and an interpretation is developed? a. Symbolic b. Spatial c. Tabular d. Exploratory

b. Spatial

A method that has been developed for presenting a variety of data on a single display in an easy-to-read format is called a ___________________. a. Graph b. Table c. Dashboard d. Data visualization

c. Dashboard

In which instance is it more suitable to present present data as a table instead of a graph? a. When the trend and the exact numeric value is important to the interpretation b. In situations where the trend in values is most important c. In situations where it is required to know the exact numeric value of a variable d. When the exact numeric value is not important to an interpretation

c. In situations where it is required to know the exact numeric value of a variable

Which of the following is the standard way to show changing variables over time? a. Bar graph b. Scatter plot c. Line graph d. Pie chart

c. Line graph

Which of the following is a good way of showing the size and proportion of data at the same time as long as the data are not too complicated? a. Isotype b. Bar chart c. Marimekko d. Area chart

c. Marimekko

Incidence is the number of _____________ cases of a disease. a. Existing b. Recurring c. New d. Old

c. New

When observing the rate of HIV/AIDS over time, we are more likely to study the ___________________ rate due to the fact that it is a chronic, ongoing condition with no cure. a. Vaccination b. Treatment c. Prevalence d. Incidence

c. Prevalence

Dashboards are: a. A graphical display of performance on key metrics b. A statistical inference tool c. A data collection tool d. Used to determine root cause of quality issues

a. A graphical display of performance on key metrics

Thelma is a pediatric intensive care nurse at Rolling Meadows Medical Center. At her nurses' station, there are screens for each patient that display various things such as heart rate and rhythm, blood pressure, respiratory rate, SmO2, and more in real time. This is an example of a _________________ dashboard. a. Continuous b. Static c. Contextual d. Complex

a. Continuous

Which of the following is a slightly improved version of the pie chart that creates more space for information about the data to be included? a. Donut chart b. Marimekko c. Tree map d. Voronoi

a. Donut chart

Which of the following is used to show the location of individual events/locations and is useful for displaying location in which the points are clustering? a. Dot map b. Heat map c. Chloropleth d. Contour map

a. Dot map

What theory establishes that visual displays can be ranked based on the time of accurately extracting information based on the position, length, angle, area, and volume of the chart? a. Graphical perception b. Data visualization c. Spatial representation d. Visual processing

a. Graphical perception

____________________ is the term referring to the visual interpretation process of graphs. a. Graphical perception b. Graphical method c. Decision making d. Graphical summaries

a. Graphical perception

Which of the following involves grid-based data values mapped using an intensity color scale? a. Heat map b. Dot map c. Chloropleth d. Cartogram

a. Heat map

In 2023, 20,803 new cases of college senioritis were reported in the US. The population of college seniors in the US in 2023 is 501,263. With this information, which of the following can we calculate? a. Incidence rate b. Prevalence rate c. Point prevalence rate d. Period prevalence rate

a. Incidence rate

Jenny needs to create a graph for her manager showing the number of patients discharged from the ICU for every month out of the year. Which graph best suits this data representation? a. Line graph b. Pie chart c. Bar graph d. Scatter plot

a. Line graph

Patient gender is an example of which type of data? a. Nominal b. Interval c. Ordinal d. Ratio

a. Nominal