A JUNGLE OF A MIDTERM By Michael

and Jackson

Welcome…

Overview Animal crackers are a common snack They provide a good amount of data points Early belief: 4-5 classes 13 different classes

Data Points Discussion Data collected by first identifying every class From these, we counted off every animal in each

class Tally marks made for every found class Data was univariate Total data points: 677 Total number of crackers in tub

Group DataClass Freq. (Intact) Freq. (Broken)Bear 52 0

Camel 46 7Sheep 46 0Goat 46 4Horse 42 16Moose 48 0

Cat 56 0Lion 43 2

Donkey 42 6Elephant 48 14

Puma 50 0Buffalo 57 5

Cow 43 4

Group Data Intact (cont.)Class Intact Relative Freq. Cum. Freq.Bear 52 8.40% 52

Camel 46 7.40% 98Sheep 46 7.40% 144Goat 46 7.40% 190Horse 42 6.70% 232Moose 48 7.80% 280

Cat 56 9% 336Lion 43 6.90% 379

Donkey 42 6.70% 421Elephant 48 7.80% 469

Puma 50 8% 519Buffalo 57 9.20% 576

Cow 43 6.90% 619TOTAL: 619 100.00% 619

Histogram/Pareto

Buffalo Cat Bear Puma Moose Elephant Sheep Goat Camel Lion Cow Horse Donkey0

10

20

30

40

50

60

Animal Crackers

Class

Freq

uenc

y

Pie ChartAnimal Crackers

Bear CamelSheep GoatHorse MooseCat LionDonkey ElephantPuma BuffaloCow

Stem and Leaf

4 2 2 3 3 6 6 6 8 8

5 0 2 6 7

Dot Plot

Box Plot

Measure of Center Mean: 47.61 Median: 46 Mode: 2 Modes Quantitative: 57 Qualitative: 46

Measures of Dispersion Range: 15 (42-57) Standard Deviation: 4.97 Fences: 3Q-1Q (51-43) 51-43=8x1.5 = 12 Fences: 31 and 63 No outliers!

Cheb Rule At least 75% of data falls between 37.61 and 57.55. At least 89% of data falls between 32.7 and 62.52

47.6142.6437.6132.7 52.58 57.55 62.52

Z-ScoresClass Z-ScoreBuffalo (57) 1.88Cat (56) 1.68Bear (52) 0.88Puma (50) 0.48Moose (48) 0.08Elephant (48) 0.08Sheep (46) -0.32Goat (46) -0.32Camel (46) -0.32Lion (43) -0.92Cow (43) -0.92Horse (42) -1.13Donkey (42) -1.13

Summary Data right-skewed Mean: 47.61 Median: 46 Mode: 2 Modes Quantitative: 57 Qualitative: 46 The data is all relatively close There are no outliers

Other Stuff… Horse least intact (42), but had most broken (16). If

combined, would have had 58. We were shortchanged by 54 crackers!

The End