Unit 3 Review.

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Presentation transcript:

Unit 3 Review

Topics we covered: Histograms Quantitative data Intervals Easier to see shape Dot plots Each dot represents a piece of data Box plots Find outliers

Topics we covered Skewed Symmetric IQR= Q3 – Q1 Median Mean < Median: Left skewed Mean > Median: Right skewed Mean = Median: Symmetric Symmetric Mean Standard deviation: Average distance from the mean

What do you think? Suppose each person in the dinner (not Bill Gates) each got a $10,000 raise, what would happen to the mean….(Think about how we find the mean)

What do you think? What would happen to the mean if someone like Bill Gates walked into the dinner?

Give Examples Mean is greater than the median Median is great than the mean Mean=Median

Center/Spread/Position Standard Deviation: Spread First Quartile: Position Mean: Center Min: Position Max: Position Range: Spread Median: Center/Position IQR: Spread

Give Examples Categorical: Zip code, favorite, brand of car, area code, fast food Quantitative: Siblings, age, height, GPA, weight, shoe size (Can you find the mean)

Make sure You can read and interpret histograms

Make sure You can read and interpret box plots

What do all the graphs have in common? What are the two that are odd man out? Why are they odd man out?

Measures of Center Question 1

Measures of Center Question 2

Measures of Center Question 3

Measures of Center Question 5

Measures of Center Question 6

Measures of Center Question 7

Measures of Center Question 8

Measures of Center Question 9

Measures of Center Question 10

Measures of Center Question 11

Measures of Center Question 12