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WorksheetsUnit 6 Vocabulary
Total questions: 15
Worksheet time: 8mins
Which visualization best shows how a whole group is broken into categories?
Pie chart with labeled slices
Scatter plot with many dots
Histogram with equal bins
Bar chart with tall bars
A bar chart is best described as a graph that uses rectangular bars to represent what?
Frequency or count values
Median and quartiles only
Percent change over time
Connections between nodes
Data visualization is primarily:
Prediction of future outcomes
Manual sorting of raw records
Statistical test of significance
Graphical representation of information
In a dashboard, a filter helps you:
Change a pie chart into a histogram
Increase the sample size automatically
Calculate new variables from nothing
Select specific data based on conditions
Match each distribution shape to its defining feature.
Bimodal curve
Symmetric with most values near center
Bell curve
Two distinct peaks in the data
Uniform distribution
Stretches more on one side than the other
Skewed distribution
All values equally likely across range
Data cleaning usually includes which actions?
Fixing spelling errors
Removing blanks where appropriate
Deleting duplicate entries
Creating meaningful categories
Adding random values to fill gaps
Measures of center are used to:
Rank categories by color
Show the spread in percentiles
Display extreme outliers only
Represent a dataset’s typical value
Which scenario most likely shows a skewed distribution?
Most values centered around 50
Many low values with a long high tail
All bins have similar heights
Two clear peaks around 30 and 70
An outlier is best defined as:
The middle value in order
A category with many items
The average of all values
A data point that differs greatly
A pattern in data is a sequence that can be:
Always perfectly linear
Hidden and random
Observed and predicted
Only seen in small samples
A trend describes:
General direction over time
Exact values at one moment
Variance around the mean
Random fluctuations only
A histogram is best for:
Listing categories alphabetically
Grouping data into value ranges
Comparing parts of a whole
Showing two variable relationships
A scatter plot is used to:
Emphasize a single average
Arrange data into equal bins
Show composition of a total
Display values of two variables
Which visualization is most appropriate for comparing category counts across groups?
Scatter plot with trendline
Bar chart with grouped bars
Histogram with many bins
Pie chart with thin slices
When cleaning data, which choice is NOT recommended?
Introduce random numbers to fit gaps
Fix obvious typos in entries
Remove duplicate records carefully
Standardize category labels
