A2 Formative Assessment #1 Box Plots, Histograms, Dot Plots

Front

What is a box plot?

Back

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

Front

What does a histogram represent?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data by showing the number of data points that fall within specified ranges (bins).

Front

What is a dot plot?

Back

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

Front

How do you find the median of a data set?

Back

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

Front

What is the upper quartile (Q3)?

Back

The upper quartile (Q3) is the median of the upper half of a data set, representing the value below which 75% of the data falls.

Front

What is the lower quartile (Q1)?

Back

The lower quartile (Q1) is the median of the lower half of a data set, representing the value below which 25% of the data falls.

Front

How do you calculate the range of a data set?

Back

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

Front

What is the significance of the median in data analysis?

Back

The median provides a measure of central tendency that is less affected by outliers and skewed data compared to the mean.

Front

What does it mean if two data sets have the same median?

Back

If two data sets have the same median, it indicates that the central value of both data sets is the same, but it does not imply that the data sets are identical or have the same distribution.

Front

How can you interpret a box plot?

Back

A box plot shows the spread and skewness of the data, highlighting the median, quartiles, and potential outliers.