Graphing Skills 5/24/2019.

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Graphing Skills 5/24/2019

Line Graph A line graph is a graph used to show change over time!! What can time be measured in??? Seconds - Minutes - Hours – Days - Weeks - Months – Years - Decades - Centuries - etc. 5/24/2019

Would we use a line graph in the following situations: When to use a line graph? Would we use a line graph in the following situations: To show how many people like pizza in this class? NO To show how much it rained each month this year? YES- because months and years deal with time. To show how many people live in Meridian, Idaho? NO 5/24/2019

Birthdays? Would we use a line graph to show when our birthdays are?                                                        Our birthday does deal with time doesn’t it? (months/years) But, our birthday is constant, meaning it never changes. A line graph shows change in time, so we would not use it for this type of graph. 5/24/2019

Title: _____________________ Y Axis 1 2 3 5 6 7 13 12 11 10 9 8 7 6 5 4 2 1 Labeling Data Intervals X Axis Labeling 5/24/2019

How do we make a line graph? A line graph ALWAYS has a title! A line graph has two different axis’s An axis is either the horizontal line (called x) or the vertical line (called y) that form the base lines of a graph. Y X                       5/24/2019

X-axis and Y-axis When you are making a line graph, the x-axis is always horizontal, and the y-axis is always vertical. The x and y-axis usually starts with zero on a line graph It is important to make sure that the intervals on our y-axis are always equal. What do I mean by this? 5/24/2019

DEPENDENT VS. INDEPENDENT REMINDER Independent variable: the difference in the experiment Dependent variable: what changes because of the independent variable When graphing: Independent variable goes on the X-axis Dependent variable goes on the Y-axis 5/24/2019

Intervals When we are setting up a line graph, we need to decide what intervals we want to use. If we are graphing the temperature for a year, do we want to put 365 days on the graph, and 100 different temperatures? When we see a horizontal flat line, that means that there was no change during a specific time period. 5/24/2019

Plotting a Line graph When we are plotting a line graph, it is important to read what information is on each axis. There must be a label on each axis that describes the information. Much like a bar graph, we look at the x-axis first in order to plot our points. Time in minutes 5/24/2019

Graph, Identify the independent and dependent variables TEMPERATURE (°C) 20 30 40 50 60 70 ENZYME ACTIVITY (mg/min) 10 15 20 8 5 5/24/2019

Used to compare the amounts or frequency of data. What is a Bar Graph? Used to compare the amounts or frequency of data. 5/24/2019

Title: _____________________ Y Axis 13 12 11 10 9 8 7 6 5 4 2 1 Data Labeling Intervals 1 2 3 5 7 X Axis Labeling 5/24/2019

Graph the following information. Which type of graph will you use? Be sure to have a title, proper labeling, accurate data, and appropriate intervals. Time (Days) Plant Height (cm) 1.43 7 2.16 14 2.67 21 3.25 28 4.04 35 4.67 5/24/2019

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Graph the following information. Which type of graph will you use? Be sure to have a title, proper labeling, accurate data, and appropriate intervals. Student Name Shoe Size Scott 10.5 Audrey 6 Levi 14 Lindsey 8 Butch 9 Alexis 5.5 5/24/2019

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PIE CHART Like a bar graph compares amount of data Used when you compare things and it equals 100% Rarely used Each slice of pie should roughly correspond to how big the percentage is 5/24/2019

COMPARING PET OWNERS 5/24/2019