Download presentation

Presentation is loading. Please wait.

Published byHerbert Williams Modified over 2 years ago

2
Graphing Makes our life simpler!

3
Why do we use graphs? It’s an organized way to express data Allows for easy interpretation of the data

4
What are the parts of a graph? Independent variable: –Goes on “x” (horizontal) axis –Controlled by the experimenter Dependent variable: –Goes on “y” (vertical) axis –Result of applying the independent variable Let’s do a practice problem!

5
Determining variables The table shows data collected on the pH of a lake in the Adirondacks over 16 years. Based on the table, what is the independent variable and what is the dependent variable? –ANS: IND = year DEP = pH level DEP = pH level

6
Setting up your graph Now we know the variables, so we know where to plot them –On X axis (independent) Year –On Y axis (dependent) pH pH Year

7
Plotting your data You are now able to plot your data Year pH

8
Interpreting your graph What is the trend in pH of this lake over 16 years? –pH decreases –pH becomes more acidic What environmental condition(s) could’ve caused this trend? –Burning fossil fuels –More factories in the area –More industrialized –More cars

9
What’s wrong with these graphs?

10
Types of relationships determined by graphs Direct relationship –BOTH variables INCREASE –Can you sketch a graph that shows this?

11
Types of relationships determined by graphs Indirect relationship: –Independent variable increases, dependent decreases –Can you sketch a graph with this relationship?

12
Types of relationships determined by graphs Cyclic relationship: –S–S–S–Shows repeating of same event over time –C–C–C–Can you sketch a graph that shows a cyclic relationship? Time

13
Types of relationships determined by graphs Stable (no change): –Dependent variable stays the same as independent increases –Can you sketch a graph showing stability?

14
Comparing rates of change using graphs The angle of plotted line tells us the rate –The STEEPER the line, the FASTER the rate –Which of the following graphs has a faster rate?

Similar presentations

OK

Graphing Data. Graphs All graphs must have title and labeled axis Labels let you know what information is shown.

Graphing Data. Graphs All graphs must have title and labeled axis Labels let you know what information is shown.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on acid-base indicators in nature Ppt on zener diodes Ppt on genetically modified crops Ppt on brand marketing jobs Ppt on water scarcity and conservation Ppt on business etiquettes training day Ppt on walt disney concert hall Ppt on channels of distribution for a product Ppt on live line maintenance techniques Ppt on standing order template