introduction to stats honors analysis. data analysis individuals: objects described by a set of...
TRANSCRIPT
Introduction to StatsHonors Analysis
Data Analysis
• Individuals: Objects described by a set of data. (Ex: People, animals, things)
• Variable: Any characteristic of an individual. Can take different values for different individuals.
• Categorical Variable: Places individual into one of several groups or categories.
• Quantitative Variable: Numerical data (for which it makes sense to make mathematical calculations)
Frequency Table
Titanic Passengers By Ticket Class
Relative Frequency Table (percents)
Titanic Passengers By Ticket Class
BAR CHART
People on the Titanic (By Ticket Class)
Pie Chart
Titanic Passengers By Ticket Class
What’s Wrong With This Graph?
What’s Wrong With This Graph?
Two-Way Tables (Contingency Tables)
• Compares two kinds of data (in this case, survival and ticket class)
Marginal Distributions
Conditional Distributions
• Calculate row or column percentages
Conditional Distributions
• Calculate row or column percentages
Segmented Bar Chart
Survival By Class
Comparative Bar Chart
Ideal Distance from College to Home
Why is this not an ideal display???
Comparative Bar Chart
Ideal Distance from College to Home
Why is this a better display?
Dot Plot