Two Way Tables, Segmented Bar Graphs, & Scatter Plots

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What is a two-way table?

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A two-way table is a statistical table that displays the frequency distribution of two categorical variables. It helps in analyzing the relationship between the two variables.

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What is relative frequency?

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Relative frequency is the ratio of the frequency of a particular category to the total number of observations. It is often expressed as a percentage.

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How do you calculate relative frequency?

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Relative frequency = (Frequency of the category) / (Total frequency) x 100%.

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What is a segmented bar graph?

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A segmented bar graph is a visual representation of categorical data where each bar is divided into segments that represent the proportion of each category within the total.

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What is a scatter plot?

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A scatter plot is a graph that displays values for two variables for a set of data. Each point represents an observation in the dataset.

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What is the purpose of a line of best fit?

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The line of best fit is used to summarize the relationship between two variables in a scatter plot, helping to predict values and identify trends.

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How do you determine the line of best fit?

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The line of best fit is determined by minimizing the distance between the line and all the data points, often using the least squares method.

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What does a positive slope in a line of best fit indicate?

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A positive slope indicates a direct relationship between the two variables, meaning as one variable increases, the other also tends to increase.

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What does a negative slope in a line of best fit indicate?

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A negative slope indicates an inverse relationship between the two variables, meaning as one variable increases, the other tends to decrease.

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What is the equation of a line in slope-intercept form?

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