1.3 Graphing
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- Words: 411
- Pages: 12
Observations Qualitative
– describe with words
–Hot , red, large
Quantitative
– describe with numbers
–100° , 10 meters, 3.46 grams
Scientists
prefer quantitative Easy to agree upon No personal bias
Models
A representation of some object or event Made to better understand it Often used if real thing is too big, small or complex. Come in a variety of forms – Physical models – Diagrams – Computer models
Measurement and Observation
Scientists use measurements to record observations. Scientists use models to explain observations. Scientists use graphs to explain observations.
Graphing Section 1.3
Why use graphs?
Graph- used to make data easier to read and understand- shows patterns and trends
What is a graph?
Visual display of information or data X-axis- horizontal- independent variable Y-axis- vertical- dependent variable Must have labels for each axis, a title, and units if appropriate You must select the proper scale.
Don’t make the scale too large or too small
Examples of Proper Scale and Improper Scale Distance Traveled in One Day 450
Distance Traveled in One Day
400 450 350 400 350 300 300 250 250 200 200
740
DistanceDistance (miles)(miles)
640 540 440
150 150
340
100 100 50 50 0 0
240 1
1
-5
140
2
402
-60 0
3 3
4
5
4
5
6
5 6 Time (hours) Time 10
Time (hours)
7
8
7
15
9 8
10
11
9
20
10
25
Graphs
Give a visual representation of da ta Summarizes data. Two types of variables – Independent variable the thing you have control over – Dependent variable the thing that you don’t have control over. Three types of graphs line, bar, and circle
Circle Graphs
Often called a pie42% chart divided into parts easy to compare to whole amount. Use several to show changes over time
33%
25% Buildings Transportation Industrial
Bar Graphs12
Bar Graphswide columns used things like weight, height , and length. Compare quantities
10 8 6 4 2 0 Production of Energy per gram
Carbohydrates Proteins Fats
Line Graphs
35
Line Graphs- compares sets of data, show change and patterns over time.
30 25
New York San Diego Salina Cruz
20 15 10 5 0 J
F
M
A M
J
J
A
S
O N
D
Graphs include
A title Labeled axes A consistent scale.
– describe with words
–Hot , red, large
Quantitative
– describe with numbers
–100° , 10 meters, 3.46 grams
Scientists
prefer quantitative Easy to agree upon No personal bias
Models
A representation of some object or event Made to better understand it Often used if real thing is too big, small or complex. Come in a variety of forms – Physical models – Diagrams – Computer models
Measurement and Observation
Scientists use measurements to record observations. Scientists use models to explain observations. Scientists use graphs to explain observations.
Graphing Section 1.3
Why use graphs?
Graph- used to make data easier to read and understand- shows patterns and trends
What is a graph?
Visual display of information or data X-axis- horizontal- independent variable Y-axis- vertical- dependent variable Must have labels for each axis, a title, and units if appropriate You must select the proper scale.
Don’t make the scale too large or too small
Examples of Proper Scale and Improper Scale Distance Traveled in One Day 450
Distance Traveled in One Day
400 450 350 400 350 300 300 250 250 200 200
740
DistanceDistance (miles)(miles)
640 540 440
150 150
340
100 100 50 50 0 0
240 1
1
-5
140
2
402
-60 0
3 3
4
5
4
5
6
5 6 Time (hours) Time 10
Time (hours)
7
8
7
15
9 8
10
11
9
20
10
25
Graphs
Give a visual representation of da ta Summarizes data. Two types of variables – Independent variable the thing you have control over – Dependent variable the thing that you don’t have control over. Three types of graphs line, bar, and circle
Circle Graphs
Often called a pie42% chart divided into parts easy to compare to whole amount. Use several to show changes over time
33%
25% Buildings Transportation Industrial
Bar Graphs12
Bar Graphswide columns used things like weight, height , and length. Compare quantities
10 8 6 4 2 0 Production of Energy per gram
Carbohydrates Proteins Fats
Line Graphs
35
Line Graphs- compares sets of data, show change and patterns over time.
30 25
New York San Diego Salina Cruz
20 15 10 5 0 J
F
M
A M
J
J
A
S
O N
D
Graphs include
A title Labeled axes A consistent scale.
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