Warm-upDay of 2.1 to 2.4 Quiz

The back-to-back stemplot shows the lifetime of severalBrand X and Brand Y batteries.

Compare the distributions of the data.

Student of the day!Block 4

Plushie names – so far…Block 4 Dan Tran the Man “I am technically right…” is in the lead with 7 votes. I will announce the official names the day of the Ch. 1 and 2 Test.•I will announce the first round winner 2 blocks after our first test.•Your picture will be taken with the Plushie and it will be posted on Edmodo!

H.W. Discussion

• The rest of 2.1 to 2.4 Reviewsheet• 2.4 E #47 and 53

Bingo Review of 2.1 to 2.4Fill in your Bingo Cards!

A B C D E AlwaysTrue

Some-times True

Never True Yes No Stem-

and-Leaf

Histo-gram

Mean Median

IQR Variance Range Skewed Right

SkewedLeft

Uniform Symme-tric

Approx.Normal

Min. Max. Q1 Q3 Scatter-plot

Relative Frequency

Outlier ParallelBox Plot

Back-to-back Stem and Leaf

Catego-rical

Continu-ous

Bimodal Discrete

Bingo Review 2.1 to 2.4 (Slide 1)

1. Mickey Mantle played with the New York Yankees from 1951 through 1968. He had the following number of home runs for those years: 13, 23, 21, 27, 37, 52, 34, 42, 31, 40, 54, 30, 15, 35, 19, 23, 22, 18. Were any of these years outliers?

2. What would be the best data display for this information?

Quiz directions• Read carefully.• Write out sentences if it says explain, compare,

describe.• When drawing the boxplot from the cumulative %

or cumulative frequency graph, I understand you are estimating.

• When you finish turn in your quiz and work on the h.w. 2.4 E#56 and 57

• READ 2.5

Textbook Answers to #47 and 53

#53

Remaining Answersto 2.1 and 2.4 Reviewsheet

8. 0.83 of 240, there is about 2 outliers.9. Min: 4.5 minutes; Q1: 40.5;Median:43.5; Q3: 46.5;Max: 67.5 10. About 22% 11. About the 60-63 category. The last 3 bars

add up to 10 so 230/240 = 95.8%12. The data is unimodal with a large gap between 5 and 33

minutes.