Statistics Chapter 1. Lessons 1.1 – 1.3 Instructor: Mrs. Carroll. 1.1 Intro to Statistics. Statistics : the science of collecting, organizing, analyzing and interpreting data in order to make decisions
Lessons 1.1 – 1.3
Instructor: Mrs. Carroll
Ratio Level - __________________ data.
Categorize, put in order, find meaningful differences, AND find ratios. Also must have a true zero. Like average rainfall. Zero rainfall means NO rain fell. 20 inches is twice as much rain as 10 inches.
1)Does zero mean “none”?
Yes to both means ratio level.
Examples: rainfall, money
Can you think of data that is ratio level?
Interval Level - __________________ data.
Categorize, put in order, AND find meaningful differences between values. Like average temperature.
The key here is that you must be able to subtract the values to show a real difference – like, “Today was ten degrees hotter than yesterday.”
Examples: temperature, dates
Ordinal Level - __________________ OR _______________ data.
Categorize AND put in order, like good, better, and best product ratings.
How else do you categorize with an order?
Nominal Level - __________________ data.
Categorizes things – like genres of music.
How else do you categorize things or people?
Nominal or Ordinal Ordinal, Interval, or Ratio
Ordinal or IntervalRatio