6thHFlashcard 3, Chapter 2...Stem and Leaf, Dot Plots & Circle graphs

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 while showing their distribution.

Front

How do you find the median of a data set?

Back

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

Front

What is a dot plot?

Back

A dot plot is a simple statistical chart that consists of dots plotted above a number line, representing the frequency of data points.

Front

What is a circle graph (pie chart)?

Back

A circle graph, or pie chart, is a circular statistical graphic divided into slices to illustrate numerical proportions.

Front

What is the mean of a data set?

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 type of graph is used to show frequency distributions?

Back

Histograms are used to show frequency distributions of numerical data.

Front

How do you interpret a histogram?

Back

A histogram displays the distribution of data points across different intervals, allowing you to see the frequency of data within each interval.

Front

What does it mean if a data set has a mode?

Back

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

Front

How can you identify outliers in a data set?

Back

Outliers can be identified by looking for values that are significantly higher or lower than the rest of the data, often using the interquartile range (IQR) method.

Front

What is the purpose of using graphs in data representation?

Back

Graphs help visualize data, making it easier to identify trends, patterns, and relationships.