Center, Shape, and Spread of Data

Front

What is the center of a data set?

Back

The center of a data set is a measure that represents the middle or typical value of the data. Common measures of center include the mean, median, and mode.

Front

Define 'shape' in the context of data distribution.

Back

The shape of a data distribution refers to the visual appearance of the data when graphed. Common shapes include symmetric, skewed (left or right), and bimodal.

Front

What does 'spread' mean in statistics?

Back

Spread refers to the extent to which data values vary. It can be measured using range, interquartile range, variance, and standard deviation.

Front

What is a double dot plot?

Back

A double dot plot is a graphical representation that displays two sets of data using dots to show the frequency of values for each set.

Front

What does it mean if a data set is skewed right?

Back

If a data set is skewed right, it means that 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 the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set, indicating the spread of the data.

Front

What is a box plot?

Back

A box plot is a standardized way of displaying the distribution of data based on a five-number summary: minimum, first quartile, median, third quartile, and maximum.

Front

What does it mean for data to be symmetric?

Back

Data is symmetric if the left and right sides of the distribution are mirror images of each other, indicating that the mean and median are equal.

Front

What is bimodal data?

Back

Bimodal data has two different modes, or values that appear most frequently in the data set.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data in numerical order and identify the middle value. If there is an even number of values, the median is the average of the two middle values.