Scatter Plots and Trend Lines Prediction

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables by displaying data points on a two-dimensional axis.

Front

What does it mean if a point is an outlier in a scatter plot?

Back

An outlier is a data point that differs significantly from other observations in a scatter plot, indicating it does not fit the overall pattern.

Front

What is a trend line?

Back

A trend line is a straight line that best represents the data points in a scatter plot, showing the general direction of the data.

Front

How can you predict values using a trend line?

Back

You can predict values by extending the trend line and finding where it intersects with the value you want to estimate.

Front

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

Back

It means that there is no discernible pattern or correlation between the two variables being plotted.

Front

What is the purpose of using scatter plots in data analysis?

Back

Scatter plots help visualize relationships between variables, identify trends, and detect outliers.

Front

How do you identify a positive correlation in a scatter plot?

Back

A positive correlation is identified when the data points slope upwards from left to right, indicating that as one variable increases, the other also increases.

Front

How do you identify a negative correlation in a scatter plot?

Back

A negative correlation is identified when the data points slope downwards from left to right, indicating that as one variable increases, the other decreases.

Front

What is the median in a data set?

Back

The median is the middle value when the data points are arranged in ascending order.

Front

What is the range in a data set?

Back

The range is the difference between the highest and lowest values in a data set.