Line Graphs & Measures of Center

Front

What is a line graph?

Back

A line graph is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments. It is commonly used to visualize data trends over time.

Front

What does the y-axis represent in a graph?

Back

The y-axis is the vertical axis in a graph that typically represents the dependent variable or the outcome being measured.

Front

What is the mode in a data set?

Back

The mode is the value that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.

Front

How do you calculate the mean of a data set?

Back

To calculate the mean, add all the numbers in the data set together and then divide by the total number of values.

Front

What is the median of a data set?

Back

The median is the middle value when the numbers in a data set are arranged in ascending or descending order. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is a measure of center?

Back

Measures of center are statistical values that describe the center point or typical value of a data set, including the mean, median, and mode.

Front

How do you find the range of a data set?

Back

The range is found by subtracting the smallest value in the data set from the largest value.

Front

What does it mean if a data set has no mode?

Back

If a data set has no mode, it means that no number appears more than once, indicating that all values are unique.

Front

What is the purpose of labeling axes in a graph?

Back

Labeling axes in a graph provides context and clarity, helping viewers understand what the data represents and the units of measurement.

Front

How can you interpret trends in a line graph?

Back

Trends in a line graph can be interpreted by observing the direction of the line: an upward slope indicates an increase, a downward slope indicates a decrease, and a flat line indicates no change.