Reading Graphs

Front

What does it mean if data is skewed right?

Back

When data is skewed right, it means that the tail on the right side of the distribution is longer or fatter than the left side. This indicates that there are a few high values that are pulling the mean to the right.

Front

What does it mean if data is skewed left?

Back

When data is skewed left, it means that the tail on the left side of the distribution is longer or fatter than the right side. This indicates that there are a few low values that are pulling the mean to the left.

Front

What is a normal distribution?

Back

A normal distribution is a bell-shaped curve where most of the data points are clustered around the mean, and the probabilities for values further away from the mean taper off equally in both directions.

Front

What is the mean in a data set?

Back

The mean is the average of all the data points in a set, calculated by adding all the values together and dividing by the number of values.

Front

What is the median in a data set?

Back

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

Front

What is the mode in a data set?

Back

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

Front

What is a bar graph used for?

Back

A bar graph is used to compare different categories of data. Each category is represented by a bar, and the height of the bar indicates the value of that category.

Front

What is a line graph used for?

Back

A line graph is used to show trends over time. It connects individual data points with a line, making it easy to see increases or decreases in values.

Front

What is a pie chart used for?

Back

A pie chart is used to show the proportions of a whole. Each slice of the pie represents a category's contribution to the total.

Front

What does the x-axis represent in a graph?

Back

The x-axis is the horizontal line on a graph that typically represents the independent variable or the category being measured.