Data Display Ticket Out the Door w/ Hints

Front

What is a box-and-whisker plot?

Back

A box-and-whisker plot is a graphical representation of data that shows the distribution through five summary statistics: minimum, first quartile (Q1), median (Q2), third quartile (Q3), and maximum.

Front

How do you find the upper quartile in a data set?

Back

The upper quartile (Q3) is the median of the upper half of the data set. To find it, first arrange the data in ascending order, then find the median of the upper half.

Front

What is a dot plot?

Back

A dot plot is a simple statistical chart that consists of dots plotted above a number line, where each dot represents a data point.

Front

How do you determine the median from a dot plot?

Back

To find the median, cross off pairs of high and low values until you reach the middle value. If there is an even number of values, average the two middle values.

Front

What is the sample size in a survey?

Back

The sample size is the number of individuals or observations included in a survey or study.

Front

How do you calculate a proportion?

Back

A proportion is calculated by dividing the part by the whole. For example, if 117 out of 486 students choose math, the proportion is 117/486.

Front

What does the median represent in a data set?

Back

The median is the middle value of a data set when it is ordered from least to greatest. It divides the data into two equal halves.

Front

What is the significance of the median in box-and-whisker plots?

Back

In box-and-whisker plots, the median is represented by a line inside the box and indicates the center of the data distribution.

Front

How can you visually compare two data sets using box-and-whisker plots?

Back

You can compare the medians, quartiles, and ranges of the two data sets by looking at their respective boxes and whiskers in the plot.

Front

What is the first step in analyzing a box-and-whisker plot?

Back

The first step is to identify the five-number summary: minimum, Q1, median, Q3, and maximum.