Question

weight mpg
2200 33
4400 19
3200 28
4700 17
2300 37
2700 32
4100 22
3700 26
2500 33
1500 28
3200 29
3000 30
weight = vehicle weight in pounds; mpg = miles traveled per gallon of fuel
a. x - axis: weight
b. y - axis: mpg
iii. writing hypotheses
what effect does high temperature have on the growth of radishes?
a. independent variable?
b. dependent variable?
c. hypothesis:

Explanation:

Step1: Identify variables for vehicle - weight and MPG

In a scatter - plot, the independent variable is usually plotted on the x - axis and the dependent variable on the y - axis. Vehicle weight is likely to influence MPG, so weight is the independent variable and MPG is the dependent variable. So for the vehicle data, x - axis is weight and y - axis is MPG.

Step2: Identify variables for radish growth

For the question about radish growth and high temperature, the factor that we can change (manipulate) is the temperature. The outcome that we measure, which is affected by the temperature, is the growth of radishes. So the independent variable is temperature and the dependent variable is the growth of radishes.

Step3: Formulate hypothesis

A hypothesis for the radish - growth question could be a statement about the relationship between temperature and radish growth. For example, if the temperature is high, then the growth of radishes will be stunted.

Answer:

a. X - axis (for vehicle data): weight
b. Y - axis (for vehicle data): MPG
a. Independent variable (for radish growth): temperature
b. Dependent variable (for radish growth): growth of radishes
c. Hypothesis (for radish growth): If the temperature is high, then the growth of radishes will be stunted.