Scatterplots

Front

What is a scatterplot?

Back

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

Front

What does a positive correlation in a scatterplot indicate?

Back

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

Front

What does a negative correlation in a scatterplot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What does no correlation mean in a scatterplot?

Back

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

Front

How can you estimate values from a scatterplot?

Back

You can estimate values by finding the corresponding point on the graph that aligns with the given variable.

Front

What is the purpose of using scatterplots in data analysis?

Back

Scatterplots are used to visually represent data and identify potential relationships or trends between two variables.

Front

What is the difference between weak and strong correlation?

Back

Weak correlation means the data points are spread out and do not closely follow a trend, while strong correlation means the data points closely follow a trend.

Front

How do you identify a positive correlation in a scatterplot?

Back

A positive correlation is identified when the data points slope upwards from left to right.

Front

How do you identify a negative correlation in a scatterplot?

Back

A negative correlation is identified when the data points slope downwards from left to right.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are data points that differ significantly from other observations and can affect the overall correlation.