1.3

Question 1

in what situation would a bar graph be used?

Answer 1

when the independent variable is categorical

Question 2

in what situation would a line graph be useful?

Answer 2

when the independent variable is quantifiable or time-related

Question 3

what is error

Answer 3

the level of uncertainty– there is always some level of uncertainty due to random chance

Question 4

what is the difference between a large error bar and small error bar?

Answer 4

a smaller error bar means there is less variability, while a larger one means the data varies more

Question 5

what does an overlap between two error bars in a bar graph mean?

Answer 5

an overlap between the error bars means that there is probably not a big enough difference to prove there was any change

Question 6

what is step 1 to writing a hypothesis?

Answer 6

step one: specific reason
(topic) is due to/caused by/dependent on/(etc.) (reason).

Question 7

what is step two to writing a hypothesis?

Answer 7

step two: testable statement
if (independent variable) increases/decreases, then (dependent variable) increases/decreases.

Question 8

what is the control group in an experiment?

Answer 8

a control group is one that is the “normal” that you compare your testing group to. you do not change the independent variable in the control group.