Graphical Displays

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 quantities across categories.

Front

How do you determine the difference in values from a bar graph?

Back

To determine the difference, subtract the height of one bar from the height of another bar representing different categories.

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data, with bins representing ranges of values.

Front

How do you calculate the bin size for a histogram?

Back

To calculate the bin size, divide the range of the data by the number of bins desired.

Front

What does it mean if a bar in a bar graph is twice as high as another?

Back

It means that the quantity represented by the taller bar is twice that of the shorter bar.

Front

What is the purpose of graphical displays in data analysis?

Back

Graphical displays help to visualize data, making it easier to identify trends, patterns, and comparisons.

Front

How can you find the total number of respondents from a bar graph?

Back

Add the heights of all the bars together to find the total number of respondents.

Front

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

Back

The x-axis typically represents categories, while the y-axis represents the values or frequencies associated with those categories.

Front

What is a frequency distribution?

Back

A frequency distribution is a summary of how often each value occurs in a dataset.

Front

How do you interpret a histogram?

Back

In a histogram, the height of each bar indicates the frequency of data points within each bin.