Graphs of Data

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 interpret a stem-and-leaf plot?

Back

To interpret a stem-and-leaf plot, identify the 'stem' (the leading digit(s)) and 'leaf' (the trailing digit) to read the data values represented.

Front

What does it mean for a number to be 'greater than' a certain value?

Back

A number is 'greater than' a certain value if it is larger than that value.

Front

What is a bar graph?

Back

A bar graph is a visual representation of data using bars of different heights or lengths to compare different categories.

Front

How do you find the fraction of a total represented in a bar graph?

Back

To find the fraction of a total represented in a bar graph, divide the number of occurrences in the category by the total number of occurrences.

Front

What is the significance of the x-axis and y-axis in a graph?

Back

The x-axis typically represents the independent variable, while the y-axis represents the dependent variable.

Front

What does it mean to express a fraction in simplest form?

Back

Expressing a fraction in simplest form means reducing it to its lowest terms, where the numerator and denominator have no common factors other than 1.

Front

How can you determine the total number of data points from a graph?

Back

To determine the total number of data points from a graph, sum the values represented for each category.

Front

What is the purpose of using graphs in data analysis?

Back

Graphs are used in data analysis to visually represent data, making it easier to identify trends, patterns, and comparisons.

Front

What does it mean for a data point to be 'less than' a certain value?

Back

A data point is 'less than' a certain value if it is smaller than that value.