Central Tendency, stem & leaf, dot plot

Front

What is the mode of a data set?

Back

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

Front

Calculate the mean of the following numbers: 12, 10, 10, 10, 13, 12, 11, 13, 10.

Back

Mean = (12 + 10 + 10 + 10 + 13 + 12 + 11 + 13 + 10) / 9 = 11.

Front

What is the median of the following data set: 6, -2, 3, 5, 12, 14, -10?

Back

First, arrange the numbers in order: -10, -2, 3, 5, 6, 12, 14. The median is 5.

Front

How do you find the mode in a data set with no repeating numbers?

Back

If no number repeats, the data set has no mode.

Front

What is a stem-and-leaf plot?

Back

A stem-and-leaf plot is a method of displaying quantitative data in a graphical format, similar to a histogram, to retain the original data values.

Front

How do you create a dot plot?

Back

A dot plot is created by placing a dot above a number line for each data point in the set.

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.

Front

If a data set has the numbers 5, 7, 8, 9, and 10, what is the median?

Back

The median is 8, as it is the middle value when the numbers are arranged in order.

Front

What does it mean if a data set has two modes?

Back

If a data set has two modes, it is called bimodal, meaning two values appear with the highest frequency.

Front

How do you find the mean of a data set?

Back

To find the mean, add all the numbers together and divide by the total count of numbers.