APES Experimental Design Final Review 🌻

Sem 1

What type of graph is used to compare different groups?

Bar graph

What rule do bar graphs follow about spacing?

Bars do not touch

When should bars be the same color?

When they are part of the same data set

When should different colors be used on a bar graph?

When showing multiple data sets

What type of data does a line graph represent?

Continuous data

What should be done to data points on a line graph?

Connect the points with a line

How should multiple data sets be shown on a line graph?

Using different colors

What type of graph shows relationships between two variables?

Scatter plot

Should points be connected on a scatter plot?

No

What does a trend line on a scatter plot show?

The average relationship in the data

What does it mean if scatter plot points are close together?

There is a strong relationship

What variable goes on the x-axis?

Independent variable

What variable goes on the y-axis?

Dependent variable

What must always be included on graph axes?

Labels with units

How should tick marks be spaced on a graph?

Evenly

Should axis numbers be exact data values?

No

What is the independent variable?

The variable being changed

What is the dependent variable?

The variable being measured

What are controls in an experiment?

Factors kept steady to avoid influence

What are constants?

Things kept the same in all trials

Can constants also be controls?

Yes

What is a control group?

A group under normal conditions for comparison

Why is a control group used?

To see if the independent variable caused a change

What makes an experiment bad?

Changing multiple variables at once

What else causes a bad experiment?

Lack of experimental controls

Why are small test groups a problem?

Results are less reliable

How should results be analyzed?

By using specific data from graphs

What is required when explaining results?

Clear connections and evidence