Graphing Data

Graphing + Data Analysis Review

by Jeff Rothrock

​Graph/Experiment Set Up

• ​The independent variable is the variable the scientist will change or decide to control

• ​Independent Variable is placed on the X or horizontal axis

• ​​The dependent variable is the variable the scientist will measure or record changes in

  The dependent Variable is placed on the Y or vertical axis

​Add I to bottom (X) and D to vertical (Y)

Fill in the Blanks

The data below was obtained by placing a cup of water in a freezer and measuring the temperature of the water every minute.

What is the Dependent Variable in this lab?

Fill in the Blanks

The graph below shows a runner’s distance from the starting line during a 30-minute race. Distance was measured in meters (m). Time was measured in minutes (min).

What is the Independent Variable in this experiment?

Multiple Choice

The data below was obtained by placing a cup of water in a freezer and measuring the temperature of the water every minute.

Which graph below best represents the data?

​There are 4 graph relationships

• ​DIRECT - as Ind/X variable increases Depend/Y variable increases

• ​INDIRECT - as Ind/X variable increases Depend/Y variable decreases

• ​CYCLIC - as Ind/X variable increases Depend/Y variable changes in a repeating pattern

• ​NONE - as Ind/X variable increases Depend/Y variable does not change

Multiple Choice

Which graph most likely illustrates a cyclic change?

Fill in the Blanks

What type of graphing relationship is shown n the graph?

Multiple Choice

A student planted three tomato plants and gave them different amounts of water each week. She wanted to see how this would affect the number of tomatoes each plant produced. Her data are shown in the table below.

Which graph shows correctly labeled axes for these data?

​DATA ANALYSIS

• ​Identify the variables asked for in the question

• ​If possible draw lines on graph to identify correct values

• ​What is the mass of object H?

• ​What is the volume of object H?

Multiple Choice

What is the mass of substance E?

• 1 g

• 2 g

• 3 g

• 4 g

Multiple Choice

What is the mass of substance C when its volume is 6 cm3?

• 1 g

• 2 g

• 3 g

• 4 g

Poll

Which plant was the tallest at the end of the 20-day period?

• Plant 1

• Plant 2

• Plant 3

Multiple Choice

What kind of graphing relationship do all 3 plants show?

• Direct

• Indirect

• Cyclic

• Static/No

Multiple Choice

approximately on what day did plant 1 become taller than plant 3?

• Day 13

• Day 15

• Day 18

• Day 20

Multiple Choice

The graph below represents the relationship between the amount of spring rainfall recorded at a pond and the number of frogs in that pond.

What is the difference between the number of frogs in the pond when the rainfall was 5 cm and when the rainfall was 20 cm?

• 30 frogs

• 40 frogs

• 50 frogs

• 60 frogs