Chapter 2 reivew

What does it mean if a graph is showing no identifiable trends?

• The graph has no use

• The graph has more than 2 variables

• There is a strong relationship between the variable

• There is no relationship between the variables

If you can not obtain exact measurements, you should make a(n)

• estimate

• guess

• calculate

• assumtption

A line graph shows...

• changes in the dependent variable only

• changes in the independent variable only

• neither the independent nor the dependent variable

• how the dependent variable changes in response to the independent variable.

For which of the following would the kilometer be the most reasonable unit for measurement?

• wingspan of an eagle

• length of an ant

• distance from here to Columbus, OH

• Height of your basketball coach

The metric system is based on the the number ______

• 1

• 10

• 100

• 1000

Units of measurement for the volume of a solid?

• centimeters

• milliliters

• liters

• cubic centimeters

How close a measurement is to its true value is its

• estimate

• significant figure

• accuracy

• assumption

You measure the length of a string three times and get values of 24.0 cm, 24.1 cm, and 24.2 cm. The actual length is 29.0 cm. What can you say about your measurements?

• They are accurate and precise

• They are accurate but not precise

• They are precise but not accurate

• They are neither accurate nor precise

SI unit for length is the ...

• liter

• meter

• square meter

• gram

Why are line graphs powerful tools?

• They are easier to make than bar graphs

• They give more information that bar graphs

• They show how different sets of data are related

• They show both numerical and categorical data