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# Do Now PowerPoint PPT Presentation

Do Now. Which of the above stats are: Nominal Ordinal Interval Ratio. Objectives. 28.January.2011 Students will be able to… Determine levels of measurements of data. Agenda. Do Now (5 min) Review Yesterday (5 min) Levels of Measurement (15 min) Pop Quiz (10 min) Exit Ticket (5 min).

Do Now

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### Do Now

• Which of the above stats are:

• Nominal

• Ordinal

• Interval

• Ratio

### Objectives

• 28.January.2011

• Students will be able to…

• Determine levels of measurements of data.

### Agenda

• Do Now (5 min)

• Review Yesterday (5 min)

• Levels of Measurement (15 min)

• Pop Quiz (10 min)

• Exit Ticket (5 min)

### Yesterday

• Qualitative vs. Quantitative

• Discrete vs. Continuous.

• Discrete vs. Discreet

### Nominal

• Data consists of names, labels, or categories only that cannot be arranged.

• Yes/No/Undecided

• Colors

• Names

### Ordinal

• Data that can be ordered, but the difference between the orders is meaningless.

• Ranks of NBA Players for PPG

### Interval

• Data that can be ordered with the added property that the difference between two values is meaningful. But there is no zero or natural starting point.

• Degrees Fahrenheit

• Years

### Ratio

• Data that can be ordered, subtracted, but also divided in a meaningful way, as well as having a natural zero starting point (or the concept of nothing.)

• Number of eggs laid by a chicken

• Price of a textbook

• Heights of students

### Pop Quiz

• Very little pop.

### Exit Ticket

• Based on a study of heights of men and women who play basketball, a researcher concludes that the exercise from playing basketball causes people to grow taller. Can you think of an alternative conclusion to this?