types of graphs (i would take some notes on this!)
DESCRIPTION
Presenting Scientific Data Line graphs are best for continuous change. –dependent variable: values depend on what happens in the experiment Plotted on the x-axis –independent variable: values are set before the experiment takes place Plotted on the y-axisTRANSCRIPT
Types of GraphsTypes of Graphs(I would take some notes (I would take some notes
on this!)on this!)
• Line graphs – data that change– Independent variable – one you
set (x-axis)– Dependent variable – changes in
response to independent (y-axis), one you measure
Presenting Scientific DataPresenting Scientific Data• Line graphs are best for continuous change.
– dependent variable: values depend on what happens in the experiment
• Plotted on the x-axis
– independent variable: values are set before the experiment takes place
• Plotted on the y-axis
Line GraphLine Graph• shows the
relationship between 2 variables– Dependant– Independent
Dep
ende
nt V
aria
ble
Independent Variable
Line GraphLine Graph
Other types of graphsOther types of graphs•Bar graphs – compare data
for several items/events•Pie charts – display data that
are parts of a whole
Bar GraphBar Graph• shows
information collected by counting
Bar GraphBar Graph
Pie GraphPie Graph• shows
distribution of parts within a whole quantity– Rarely used
for science labs!
Presenting Scientific Data, Presenting Scientific Data, continuedcontinued
• Pie graphs show the parts of a whole.
– A pie graph is ideal for displaying data that are parts of a whole.
– Data in a pie chart is presented as a percent.
Composition of a Winter Jacket
Presenting Scientific Data, Presenting Scientific Data, continuedcontinued
〉Why is organizing data an important science skill?
〉Because scientists use written reports and oral presentations to share their results, organizing and presenting data are important science skills.
BellringerBellringerImagine your teacher asked you to study how the addition of different amounts of fertilizer affect plant heights. In your experiment, you collect the data shown in the table below. Use this data to answer the following questions.
Bellringer, Bellringer, continuedcontinued1. Which amount of fertilizer produced the tallest
plants?2. Which amount of fertilizer produced the smallest
plants?3. Plot the data on a grid like the one below.
4. Describe the overall trend when more fertilizer is used to grow plants.
Affect of fertilizer on plant height
0
5
10
15
20
25
10 25 20 0 5 30 15 35
Amount of Fertilizer (g)
Heig
ht o
f pla
nt in
cm
Affect of Fertilizer on Plant height
0
5
10
15
20
25
0 5 10 15 20 25 30 35
Amount of fertilizer (grams)
Heig
ht o
f Pla
nt
(cen
timet
ers)
Key IdeasKey Ideas〉Why is organizing data an
important science skill?〉How do scientists handle very
large and very small numbers?〉How can you tell the precision of
a measurement?