Ch 9 Test: Data Analysis and Displays

Front

What is data analysis?

Back

Data analysis is the process of inspecting, cleaning, transforming, and modeling data to discover useful information, inform conclusions, and support decision-making.

Front

What is a data display?

Back

A data display is a visual representation of data that helps to communicate information clearly and efficiently to users.

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data, showing how many data points fall within specified ranges (bins).

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 data points using Xs or dots.

Front

What is a pie chart?

Back

A pie chart is a circular statistical graphic that is divided into slices to illustrate numerical proportions.

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.

Front

What does 'line of best fit' mean?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data points.

Front

What is a misleading graph?

Back

A misleading graph is a visual representation of data that can lead to incorrect interpretations, often due to improper scaling or representation.

Front

What is the importance of starting a graph at zero?

Back

Starting a graph at zero is important to accurately represent the data and avoid exaggerating differences between values.

Front

What is the total number of people surveyed if 100 were reported?

Back

The total number of people surveyed is 100.