1.2 Study Guide

Question 1

What is the difference between mass and volume? And what is their relationship?

Answer 1

Mass (g) - the matter in an object
Volume (mL) - space an object takes up
Their relationship is that the volume of the object is directly proportional to its mass.

Question 2

How does someone calculate mean?

Answer 2

Sum up all terms and divide by the total number of terms.

Question 3

How does someone calculate median?

Answer 3

If there is an odd amount of numbers, the median value is the number that is in the middle. If there is an even amount of numbers in the list, the middle pair must be determined, added together, and divided by two to find the median value.

Question 4

Does the independent variable go on the x or y axis? How about the dependent variable

Answer 4

It belongs on the x-axis.
Dependent goes on the y-axis.

Question 5

Find the mean and median from these set of numbers - 19, 22, 27, 31, 34

Answer 5

Mean 19, 22, 27, 31, 34 = 133/5 = 26.6
Median - 27

Question 6

Find the independent variable and dependent variable.
The more violent scenes a child witnesses in tv shows, the more violent behaviors they will perform because they mimic behaviors.

Answer 6

The independent variable (cause) is the amount of violence in tv shows.
The dependent variable (effect) is the amount of violent behavior performed by the child.

Question 7

What is the relationship between the metric prefixes and base units?

Answer 7

The relationship is the prefixes in the metric system tell you how many of the base unit is being represented.

Question 8

Difference between indirect and direct relationship?

Answer 8

Indirect relationship - as one variable increases, the other decreases (sloped downward)
Direct relationship - both variables increase together (sloped upward)

Question 9

What is the definition of an independent variable?

Answer 9

Factor that is varied in an experiment and specifically controlled by the experimenter.

Question 10

What is the definition of an dependent variable?

Answer 10

Factor that is measured in an experiment and will change as a result of the independent variable.

Question 11

What is a constant, non-linear, and peak relationship look like plotted on a graph?

Answer 11

A constant relationship has change in one variable that has no effect on the other (dots appear random)
A non-linear relationship curves up or down, while a peak relationship has a clear optimum (points go up then immediately down).