Dot Plots, Histograms, Stem and Leaf graphs

Front

What is a dot plot?

Back

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

Front

How do you interpret a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, where the height of each bar represents the frequency of data within a specific interval.

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, but retains the original data values.

Front

What does the term 'frequency' mean in statistics?

Back

Frequency refers to the number of times a particular value or range of values occurs in a data set.

Front

How do you find the median in 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, average the two middle values.

Front

What is the mode of a data set?

Back

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

Front

How do you calculate the range of a data set?

Back

The range is calculated by subtracting the minimum value from the maximum value in the data set.

Front

What is the purpose of using intervals in a histogram?

Back

Intervals group data into ranges, making it easier to visualize the distribution and frequency of data points.

Front

What does a bar height in a histogram represent?

Back

The height of a bar in a histogram represents the frequency of data points within the corresponding interval.

Front

How can you identify outliers in a data set?

Back

Outliers can be identified as data points that fall significantly outside the range of the rest of the data, often more than 1.5 times the interquartile range.