Question

1. you want to see what dog food is best for your dog. you feed your dog a different brand of dog food and observe his activity and poop each week for 8 weeks. at the end of 8 weeks, you will compare his activity levels and poop from each food. independent-_ dependent-_ control/constant-_ 4. your basketball team is trying to decide what type of shoe would be best to purchase to improve your jump shots. you are given 3 pairs of shoes to try out at practice for 3 weeks. independent-_ dependent-_ control/constant-_ 5. you want to see if eating a good breakfast makes a difference in productivity. you get 4 groups of classmates and feed them each a different breakfast, and then ask them to fold papers. after 3 hours you count how many papers have been folded. independent-_ dependent-_ control/constant-___

Explanation:

Step1: Identify independent variable for dog - food experiment

The variable being changed is the brand of dog food.
Independent - Brand of dog food

Step2: Identify dependent variable for dog - food experiment

What is being measured (affected by the change) is the dog's activity and poop.
Dependent - Dog's activity and poop

Step3: Identify control/constant for dog - food experiment

The dog itself and the time period (8 weeks) remain the same.
Control/constant - The dog, 8 - week time period

Step4: Identify independent variable for basketball - shoe experiment

The type of shoe is what is being changed.
Independent - Type of shoe

Step5: Identify dependent variable for basketball - shoe experiment

What is being measured is the improvement in jump - shots.
Dependent - Improvement in jump - shots

Step6: Identify control/constant for basketball - shoe experiment

The basketball team and the 3 - week practice time remain the same.
Control/constant - The basketball team, 3 - week practice time

Step7: Identify independent variable for breakfast - productivity experiment

The type of breakfast is what is being changed.
Independent - Type of breakfast

Step8: Identify dependent variable for breakfast - productivity experiment

What is being measured is the number of papers folded (productivity).
Dependent - Number of papers folded

Step9: Identify control/constant for breakfast - productivity experiment

The classmates and the 3 - hour time period remain the same.
Control/constant - The classmates, 3 - hour time period

Answer:

3.
Independent - Brand of dog food
Dependent - Dog's activity and poop
Control/constant - The dog, 8 - week time period
4.
Independent - Type of shoe
Dependent - Improvement in jump - shots
Control/constant - The basketball team, 3 - week practice time
5.
Independent - Type of breakfast
Dependent - Number of papers folded
Control/constant - The classmates, 3 - hour time period