1.3 Study Guide

Question 1

What is a hypothesis

Answer 1

a testable educated guess that has not yet been proven

Question 2

What are the two steps to making a hypothesis?

Answer 2

1. come up with a specific reason to explain it and 2. write a testable statement

Question 3

What is the difference between independent and dependent variable?

Answer 3

Ind. is what’s being manipulated and dep. is the result or outcome.

Question 4

What is a control group?

Answer 4

Something in an experiment that can be compared to the experimental group.

Question 5

How many independent variables should the control group have that is different from the experimental group?

Answer 5

1 ind. variable

Question 6

Why can there not be more than one ind. variable in the control group?

Answer 6

Results will be unaccurate

Question 7

What is the purpose of an error bar?

Answer 7

They show the uncertainty in a reported measurement.

Question 8

If the error bars overlap a lot, the data is very accurate and reliable, TRUE OR FALSE

Answer 8

false

Question 9

“If you increase the amount of sleep a student gets, they will have better grades.” what is the independent variable and dependent?

Answer 9

The sleep is independent and the amount of sleep is dependent.