Test 1 Review

What hypothesis would best go with the following scenario?

How does advertising affect the sales of Extra gum?

• If the advertisement is well done, then the sales of Extra gum will increase.

• Advertising has no effect on the sales of Extra gum.

What hypothesis would best go with the following scenario?

What effect does using plant food (Miracle Grow) have on plant growth?

• Miracle grow works well on plants.

• If Miracle Grow is used, then the plants will have more growth.

Tags

NGSS.MS-LS1-5

What hypothesis would go best with the following scenario?

What effect does cleaning have on the number of bugs in a person's house?

• If the person cleans more, then there will be less bugs.

• If the person cleans more, then there will be more bugs.

What hypothesis would best go with the following scenario?

How does the number of coupons you use affect the amount of money you save?

• If you use less coupons, then you will save more money.

• If you use more coupons, then you will save more money.

What is the independent variable?

• The output (what changes because of something else)

• The thing that the experimenter changes (input)

• What is controlled

Tags

NGSS.MS-PS2-2

What is the dependent variable

• The output (what changes because of something else)

• What the experimenter changes (input)

• The controlled group

Tags

NGSS.MS-PS2-2

Find the independent variable.

If students spend more time using TikTok, then they will read fewer books.

• number of books read
• amount of time spent on other social media platforms
• time spent using TikTok
• number of friends on TikTok

Find the dependent variable.

If students spend more time on TikTok, then they will read fewer books.

• number of books read
• number of books written
• number of books bought
• amount of time spent on TikTok

Find the independent variable.

A study claims that drinking energy drinks makes people more aggressive.

• watching TV
• listening to music
• drinking energy drinks
• eating chocolate

Find the dependent variable.

A study claims that drinking energy drinks makes people more aggressive.

• intelligence
• aggression
• happiness
• calmness