The Relationship between Two Quantitative Variables Answers

The scatterplot illustrates the relationship between distance and success rate of field-goal attempts for a sample of football kickers.

Medical researchers studying a medication in male and female patients 20 to 29 years old noticed that, up to a certain amount, a larger concentration of an active ingredient lead to greater levels of symptom relief.

Among players drafted to play professional football, it seems as though those who weigh more tend to have slower 40-yard dash times. The data in the table show various weights (in pounds) and 40-yard dash times (in seconds) for a sample of football players.

Football coaches running their summer practices noticed that the players who weighed more typically had slower times for their 40-yard dash.

Exercise science researchers collecting data within their state noticed that teens who spend more time streaming videos spend less time exercising.

During a particularly dry growing season in a southern state, farmers noticed that there is a delicate balance between the number of seeds that are planted per square foot and the yield of the crop in pounds per square foot. The yields were the smallest when the number of seeds per square foot was either very small or very large.

During a particularly dry growing season in a southern state, farmers noticed that there is a delicate balance between the number of seeds that are planted per square foot and the yield of the crop in pounds per square foot. The yields were the smallest when the number of seeds per square foot was either very small or very large. The data in the table show various numbers of seeds planted per square foot and yields (in pounds per square foot) for a sample of fields.

Medical researchers noticed that when the amount of the active ingredient within a patient’s allergy medicine is increased, the patients taking that medicine report higher levels of relief from their allergy symptoms. The data in the table show various levels of the active ingredient (in milligrams) and a score (from 0 to 10) indicating the level of allergy relief experienced for a sample of patients.

Auto technicians working at a shop in a rural residential area noticed that the depth of tire treads was smaller among cars that have more miles on the odometer.

Among football field-goal kickers, the rate of success for field-goal attempts tends to decrease as the distance for the field-goal attempt increases. The data in the table show various field-goal attempt distances and the success rate at those distances.

The scatterplot illustrates the relationship between two quantitative variables: number of seeds planted and the crop yield per square foot.

The scatterplot illustrates the relationship between two quantitative variables: the amount of an active ingredient in a medicine and the level of pain relief (on a scale of 1 to 10).

At a dome-style football stadium, sports analysts noticed that as the distance of a field-goal attempt increased, the success rate of a field-goal attempt decreased.

Which scatterplot demonstrates the strongest relationship between two quantitative variables?

Real estate agents in a county with a large, urban residential area noticed that families with larger incomes tend to live in homes that sell for higher prices.

Which scatterplot demonstrates the strongest relationship between two quantitative variables?