Unit 10 - Histograms and Data Analysis

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within specified ranges (bins).

Front

What is the purpose of a stem-and-leaf plot?

Back

A stem-and-leaf plot is used to display quantitative data in a way that retains the original data values while showing the shape of the distribution.

Front

How do you determine the height of a bar in a histogram?

Back

The height of a bar in a histogram represents the frequency (count) of data points that fall within the corresponding interval (bin).

Front

What does the x-axis represent in a histogram?

Back

The x-axis represents the intervals (bins) of the data, showing the range of values.

Front

What does the y-axis represent in a histogram?

Back

The y-axis represents the frequency of data points within each interval (bin).

Front

How can you find the percentage of data in a specific interval from a histogram?

Back

To find the percentage, divide the frequency of the interval by the total number of data points and multiply by 100.

Front

What is the difference between a histogram and a bar graph?

Back

A histogram displays continuous data and shows frequency distributions, while a bar graph displays categorical data and compares different groups.

Front

What is a line plot?

Back

A line plot is a simple way to display data along a number line, showing the frequency of each value with dots or marks.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and multiply by 100.

Front

What is the significance of the mode in a data set?

Back

The mode is the value that appears most frequently in a data set, indicating the most common observation.