Scatterplots and Correlation Practice

Front

What is a scatterplot?

Back

A scatterplot is a type of data visualization that displays the relationship between two numerical variables.

Front

How are scatterplots used to represent data?

Back

Scatterplots are used to visually represent the relationship between two variables by plotting individual data points on a graph.

Front

What does a positive correlation on a scatterplot indicate?

Back

As one variable increases, the other variable also tends to increase.

Front

What does a negative correlation on a scatterplot indicate?

Back

As one variable increases, the other variable decreases.

Front

What does no correlation on a scatterplot indicate?

Back

No relationship between the variables

Front

How can outliers affect the interpretation of a scatterplot?

Back

Outliers can distort the overall pattern and trend in the data, leading to inaccurate estimates and summary statistics.

Front

What is the purpose of adding a trendline to a scatterplot?

Back

To visually represent the relationship between variables and identify patterns or trends.

Front

How can you use a scatterplot to make predictions?

Back

By analyzing the pattern or trend observed on the scatterplot.

Front

What type of correlation does the following scatterplot show? Options: Positive, Negative, None

Back

None

Front

Which statement could be correct? Options:

There is a correlation of 0.54 between the position a football player plays and his weight.

,

We found a correlation of r = –0.63 between gender and political party preference.

,

The correlation between the distance travelled by a hiker and the time spent hiking is r = 0.9 meters per second.

,

We found a high correlation between the height and age of children: r = 1.12.

,

The correlation between mid-August soil moisture and the per-acre yield of tomatoes is r = 0.53.

Back

The correlation between mid-August soil moisture and the per-acre yield of tomatoes is r = 0.53.