1. Jeopardy Final Jeopardy Chapter 1 Chapter 2 Chapter 3 Chapter 4
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Final Jeopardy

2. 1 - $100
Name the W’s
Who, What, When, Where, Why, How

3. 1 - $200 What are the 2 types of variables discussed in chapter 1?
Categorical and quantitative

4. 1 - $300
What is the difference between categorical and quantitative data?
Categorical – categories.. Quantitative – can be measured in units

5. 1 - $400
The class is given a survey asking for: gender, number of siblings, and number of states visited. What are the variables and what type of variable are they?
Gender – Categorical….. Siblings – Quantitative …. States - Quantitative

6. 1 - $500
Dr. Engle distributed a survey (on paper) to all advisory classes (grades 9-12) at Clear Lake High School to find out how students got to & from school (car, walk, bike, bus). What ‘w’ is missing?
When

7. 2 - $100 What graphs best display categorical data?
Pie graph, bar graph, segmented bar graph

8. 2 - $200
What is the difference between a frequency table and a relative frequency table?
Relative frequency shows percent compared to the group, frequency shows count number

9. 2 - $300 Find the marginal distribution of survival rate
Alive – 711/2201 = 32.2%
Dead – 1490/2201 = 67.7%

10. 2 - $400 Find the conditional distribution of classes that survived.
1st – 203/711 = 28.55% 2nd – 118/711 = 16.6%
3rd – 178/711 = 25.03%
Crew– 212/711 = 29.82%

11. 2 - $500
What percent of the crew were survivors?
212/885 = 23.95%

12. 3 - $100 What graphs best display quantitative data?
Histogram, stem and leaf, dot plot, box and whisker

13. 3 - $200 What 5 numbers are used in the box plot?
5 number summary – Min, Q1, Median, Q3, Max

14. 3 - $300 What is the benefit of using stem and leaf over a histogram?
Stem and leaf preserve the individual data values, histograms show ranges

15. 3 - $400 What 4 things do we discuss when describing a distribution?
Shape, unusual (outliers), center, spread

16. 3 - $500
What would be the appropriate measure of center and spread for the following graph? Why?
Median and IQR ; outliers present

17. 4 - $100
What measure of center and spread will be effected by outliers?
Mean and Standard deviation

18. 4 - $200
Which boxplot has the higher median? What is it?
Set A, 11

19. 4 - $300
Which boxplot has a larger IQR? What is it?
Set B, 6

20. 4 - $400 How can we use calculations to see if there are any outliers?
Q1 – 1.5(IQR) = Lower fence
Q (IQR) = Upper fence
Anything outside of these fences = outlier

21. 4 - $500 Does this set of data have any outliers?
Min: 0 Q1: 9 Med: Q3: Max:28
No, all values fall between the fences

22. 5 - $100
What two things do we look for when deciding if we can use a normal model?
Symmetric, unimodal, outliers

23. 5 - $200
What % make up the rule for the normal model, and how many standard deviations away from the mean do you need to go for each?
68% – 1 st dev both directions
95% - 2 st dev away both directions
99.7% - 3 st dev away both directions

24. 5 - $300 When given a normal model, find P ( z < 0.8 )

25. 5 - $400
What is the z score of the 43rd percentile under the normal curve?
Z = -.176

26. 5 - $500 Test 1: mean = 87.5 s = 3 Test 2: mean = 91.0 s = 2.5
Joe made a 90 on test 1 and a 92 on test 2. Which test did he do “better” on? Give both z scores for proof.
Test 1: z = Test 2: z = .4
Joe was more successful than the class average by .8 standard deviations on test 1, so he did “better” on test 1.

27. Final Jeopardy
Given the normal model below, what z scores hold the middle 50% of the data? Hint: think IQR
-0.67 < z < 0.67