Graphing In Science Bar Graphs The bars have

Graphing In Science

Bar Graphs • The bars have to be spaced out • The data is non-continuous • Is typically used to describe voting data Type of Candy Vote Coffee Crisp 4 Smarties 1 Sour Patch Kids 8 Swedish Berries 1 Kit-Kat 6 Caramilk 0

Favourite type of Candy 9 8 7 # of Votes 6 Coffee Crisp 5 Smarties 4 Sour Patch Kids 3 Kit-Kat Swedish Berries Caramilk 2 1 0 Coffee Crisp Smarties Sour Patch Kids Swedish Berries Type of candy Kit-Kat Caramilk

Histograms • The data in a histogram is continuous • This means that there are NO gaps between the bars • The data for each bar is a range Height range # of individuals 5’-5’ 3” 5’ 4”-5’ 6” 4 9 5’ 7”-5’ 9” 4 5’ 10”-6’ 4 6’ 1”-6’ 3” 2

Height Range Physics 11 10 9 8 # of Individuals 7 6 5 4 3 2 1 0 5’-5’ 3” 5’ 4”-5’ 6” 5’ 7”-5’ 9” Height (feet and inches) 5’ 10”-6’ 6’ 1”-6’ 3”

Line graphs • Tend to be continuous • A line is often used to connect the points • The points can also be discontinuous which produces a non-linear graph Time (seconds) Distance (meters) 1 4 2 8 3 12 4 16 5 20 6 24 7 28

Distance and Time Graph 30 Distance (meters) 25 20 15 Linear distance Non linear distance 10 5 0 1 2 3 4 Time (seconds) 5 6 7

Shapes of Graphs • Direct relationship (a straight line with an angle) • A = k. B • Exponential relationship (a curved line) • A = k. B 2 • No relationship (A has no effect on B) • Inverse relationship or inverse square relationship • A = k/B OR A = k/B 2