Front

What is an outlier in a data set?

Back

An outlier is a data point that differs significantly from other observations in a dataset. It can skew the results and affect statistical analyses.

Front

How do you identify an outlier in a scatter plot?

Back

An outlier can be identified as a point that lies far away from the cluster of other points in the scatter plot.

Front

What is the purpose of a line of best fit?

Back

The line of best fit is used to summarize the relationship between two variables in a scatter plot, helping to predict values.

Front

How do you calculate the percentage of a subset from a total?

Back

To calculate the percentage, divide the number of items in the subset by the total number of items, then multiply by 100.

Front

What does it mean if 47% of attendees at an event also attended another event?

Back

It means that nearly half of the people who attended the first event also participated in the second event, indicating a possible correlation.

Front

What is the significance of the coordinates (9,1) in a data set?

Back

The coordinates (9,1) represent a specific point in a two-dimensional space, which may be an outlier or a significant data point.

Front

How can you determine the age of a tree based on its height?

Back

The age of a tree can often be estimated using growth charts or formulas that relate height to age, though this can vary by species.

Front

What is a scatter plot?

Back

A scatter plot is a graph that uses dots to represent the values obtained for two different variables, showing the relationship between them.

Front

What is the formula for finding the slope of a line?

Back

The slope (m) is calculated as the change in y divided by the change in x (m = Δy/Δx).

Front

What does it mean for a line to be a 'best fit' line?

Back

A 'best fit' line minimizes the distance between itself and all the data points in a scatter plot, providing the best representation of the data.