Exploring One–Variable Data
If a dot plot of data shows that the majority of dots are clustered around the mean, what does this indicate about the distribution?
What type of plot shows the relationship between two quantitative variables?
Which type of graph would be most appropriate for displaying the distribution of a categorical variable?
What does a longer upper whisker (right-hand whisker) in a box plot indicate about the data?
Which feature in a box plot indicates the presence of potential outliers in the data set?
If a back-to-back stemplot displays students’ test scores before and after implementing a new teaching method, where most stems have more “after” leaves and those leaves extend farther to the right than “before” leaves, what hypothesis coul...
When comparing a linear regression model to a quadratic model using residual plots, which pattern would indicate that the linear model is less appropriate for the dataset?
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When using a scatterplot to explore the relationship between two quantitative variables, what can indicate that linear regression may not be the best model choice?
What conclusion can often be drawn when comparing two histograms where one has wider spread but similar center compared to another?
In an experiment studying reaction times under different noise levels, which graphical representation could effectively compare median reaction times across several noise conditions?