3A

U.S. State Count
California 33
Florida 203
Hawaii 51
North Carolina 23
Other 27
South Carolina 34
Texas 16
U.S. State Count Proportion Percent (%)
California 33 0.0853 8.53
Florida 203 0.5245 52.45
Hawaii 51 0.1318 13.18
North Carolina 23 0.0594 5.94
Other 27
South Carolina 34
Texas 16

A bar graph of shark attacks across various regions. The vertical axis is labeled "Count" and numbered in increments of 50 up to 200 and the horizontal is labeled "Region." The bar for Florida reaches the top of the chart. The bar for Hawaii goes to the line at 50. The bar for South Carolina goes approximately two thirds of the way to the line at 50. The bar for California goes approximately two thirds of the way to the line at 50. The bar for North Carolina goes approximately halfway to the line at 50. The bar for Australia goes to approximately halfway between the line at 100 and the line at 150. The bar for South Africa goes almost to the line at 50. The bar for Reunion Island goes approximately one third of the way to the line at 50. The bar for Brazil goes approximately one third of the way to the line at 50. The bar for the Bahamas goes approximately one fifth of the way to the line at 50. The bar for other regions goes to approximately three quarters of the way between the line at 100 and the line at 150.A pie chart of International Shark Attacks showing 56.2% in the United States, 18.1% in Australia, and 25.7% in other countriesA pie chart of shark attacks in the United States showing 52.5% in Florida and 47.5% in all other states

A student napping on a desk in a classroom

AnxietyScore StressScore AnxietyStatus Stress Happiness AllNighter AverageSleep
3 8 normal normal 28 0 7.18
0 3 normal normal 25 0 6.93
18 9 severe normal 17 0 5.02
4 6 normal normal 32 0 6.9
25 14 severe normal 15 0 6.35
8 28 moderate high 22 0 9.04
0 1 normal normal 25 1 7.52
2 3 normal normal 29 0 9.01
16 20 severe high 29 0 8.54
11 31 moderate high 30 0 6.68
All Nighter?

0 = no, 1 = yes

 Frequency
0 219
1 34
Frequency Table:
Anxiety Level Frequency Relative Frequency Percent (%)
normal 181 0.715 71.5
severe 16 0.063 6.3
moderate 56 0.221 22.1
Total: 253 1.000 100.0
Frequency Table:
Stress Level Frequency Relative Frequency Percent (%)
normal 197 0.779 78
high 56 0.221 22
Total: 253 1.000 100
Alcohol Age Height Punctuality Number of siblings Enjoy Music 1=strongly disagree, 5=strongly agree Internet usage Left – right handed
drink a lot 20 163 I am always on time 1 5 few hours a day right handed
drink a lot 19 163 I am often early 2 4 few hours a day right handed
drink a lot 20 176 I am often running late 2 5 few hours a day right handed
drink a lot 22 172 I am often early 1 5 most of the day right handed
social drinker 20 170 I am always on time 1 5 few hours a day right handed
never 20 186 I am often early 1 5 few hours a day right handed
social drinker 20 177 I am often early 1 5 less than an hour a day right handed
drink a lot 19 184 I am always on time 1 5 few hours a day right handed
social drinker 18 166 I am often early 1 5 few hours a day right handed
drink a lot 19 174 I am often running late 3 5 few hours a day right handed
social drinker 19 175 I am often early 2 5 less than an hour a day left handed
never 17 176 I am often running late 1 5 few hours a day right handed
social drinker 24 168 I am often running late 10 5 few hours a day right handed
social drinker 19 165 I am often early 1 5 few hours a day right handed
social drinker 22 175 I am often early 1 5 most of the day right handed
Alcohol Frequency Relative Frequency Percent

 (%)
Never 2 2/15 = 0.1333 13.33
Social drinker
Drink a lot
Underneath a heading reading "Options," there is a checklist with the items "Show Percent," "Show Counts/Percent in Bars," "Pareto Chart," "Horizontal Bars," and "Customize Order." "Customize Order" is checked. Underneath the checklist, it reads "Choose Order of Categories." Beneath that is a text entry box reading "1, 2, 3, 4, 5." A bar graph showing how much young adults enjoy music. The vertical axis is labeled "Count" and extends up to 60 by increments of 10 and the horizontal axis is labeled music rating. The "1" rating is approximately at 1. The "2" rating is approximately at 20. The "3" rating is at approximately 7. The "4" rating is at approximately 14. The "5" rating is at approximately 65. A bar graph showing how much young adults enjoy music. The vertical axis is labeled "Count" and extends up to 800 by increments of 200. The horizontal axis is labeled "Music Rating." The bar for "1" is at approximately 0. The bar for "2" is at approximately 0. The bar for "3" is at approximately 50. The bar for "4" is at approximately 150. The bar for "5" is approximately at 820. A bar graph showing how much young adults enjoy music. The vertical axis is labeled "Count" and extends up to 300 by increments of 50. The horizontal axis is labeled "Music Rating." The bar for "1" is at approximately 0. The bar for "2" is at approximately 0. The bar for "3" is at approximately 15. The bar for "4" is approximately at 50. The bar for "5" is at approximately 300.
A bar graph showing how much young adults enjoy music. The vertical axis is labeled "Percent (%)" and extends up to 80 by increments of 20. The horizontal axis is labeled "Music Rating." The bar for "1" is at approximately 0. The bar for "2" is at approximately 0. The bar for "3" is at approximately 5. The bar for "4" is at approximately 15. The bar for "5" is approximately at 80.
A pie chart of young adults punctuality. The section for "I am often early" is 38.5%. The section for "I am always on time" is 34.6%. The section for "I am often running late" is 26.9%.
Skill or Concept: I can . . . Questions to check your understanding Rating
from 1 to 5
Determine which variables are categorical from raw data. 1
Understand how frequency tables are formed from raw data. 2
Understand how graphs for categorical data are formed from frequency tables. 4
Use data analysis tools to create a frequency table from an embedded dataset. 3
Read frequency tables, bar graphs, and pie charts. 3–5

Glossary

frequency
the number of times an event or a value occurs. It is commonly referred to as the count.
frequency table
a table that lists the number of observations (the frequency or count) of each unique value of a categorical variable.
relative frequency
the proportion of observations that are in a particular category and can be expressed as a decimal or a percentage.
bar graph
a graph in which the categories are represented by bars that are separated from each other.
pie chart
a chart in which categories are represented by wedges in a circle and are proportional in size to the percentage of individuals/items in each category.
categorical variable
a variable that places an individual into one of several groups.
quantitative variable
a variable that takes numerical values that can be used in arithmetic.
dataset
a collection of data.