Shape, Center & Spread

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest. If there is an even number of values, the median is the average of the two middle numbers.

Front

What does it mean for data to be skewed right?

Back

Data is skewed right when the tail on the right side of the distribution is longer or fatter than the left side, indicating that there are a few high values.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set, which can affect the overall analysis.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value from the largest value in the data set.

Front

What is interquartile range (IQR)?

Back

The interquartile range is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the middle 50% of the data.

Front

What does it mean for data to be uniform?

Back

Uniform data has a constant frequency across all values, meaning each value appears with the same frequency.

Front

What is a box plot?

Back

A box plot is a graphical representation of a data set that shows the median, quartiles, and potential outliers.

Front

What is the first quartile (Q1)?

Back

The first quartile (Q1) is the median of the lower half of a data set, representing the 25th percentile.

Front

What is the third quartile (Q3)?

Back

The third quartile (Q3) is the median of the upper half of a data set, representing the 75th percentile.

Front

How do you identify an outlier using the IQR?

Back

An outlier can be identified if it is more than 1.5 times the IQR above Q3 or below Q1.