Histograms & Scatter Plots

Front

What is a histogram?

Back

A histogram is a type of bar graph that represents the frequency distribution of numerical data. Each bar represents a range of values (intervals), and the height of the bar shows how many data points fall within that range.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two numerical variables. Each point on the graph represents an ordered pair of values.

Front

What does it mean if a scatter plot shows a positive correlation?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What does it mean if a scatter plot shows no correlation?

Back

No correlation means that there is no predictable relationship between the two variables; changes in one variable do not affect the other.

Front

How do you determine the line of best fit in a scatter plot?

Back

The line of best fit is determined by finding a straight line that best represents the data points on the scatter plot, minimizing the distance between the line and all points.

Front

What is the purpose of a line of best fit?

Back

The line of best fit helps to predict values and understand the relationship between the two variables represented in the scatter plot.

Front

What is an interval in a histogram?

Back

An interval in a histogram is a range of values that groups data points together to show frequency.

Front

How do you read a histogram?

Back

To read a histogram, look at the height of the bars to determine how many data points fall within each interval.

Front

What does the height of a bar in a histogram represent?

Back

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

Front

What is the significance of the x-axis in a scatter plot?

Back

The x-axis in a scatter plot represents one of the variables being analyzed, typically the independent variable.