Comparing and Analyzing Data Sets

Front

What is a measure of center?

Back

A measure of center is a statistical value that represents the center point or typical value of a data set, commonly calculated as the mean, median, or mode.

Front

What is the mean?

Back

The mean is the average of a data set, calculated by adding all the values together and dividing by the number of values.

Front

What is the median?

Back

The median is the middle value of a data set when the values are arranged in ascending order. If there is an even number of values, the median is the average of the two middle values.

Front

What is the mode?

Back

The mode is the value that appears most frequently in a data set.

Front

What is a measure of variation?

Back

A measure of variation indicates how spread out the values in a data set are, commonly assessed using range, variance, and standard deviation.

Front

What is the range of a data set?

Back

The range is the difference between the maximum and minimum values in a data set.

Front

What is interquartile range (IQR)?

Back

The interquartile range (IQR) 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 a box plot represent?

Back

A box plot visually displays the distribution of a data set, showing the median, quartiles, and potential outliers.

Front

What is a skewed distribution?

Back

A skewed distribution is one where the data is not symmetrically distributed, resulting in a longer tail on one side.

Front

What does a skewed-left distribution look like?

Back

In a skewed-left distribution, the tail of the distribution is longer on the left side, indicating that there are a few lower values.