1. The following is a list of closing prices for 15 of the stocks held by an institutional investor. What was the average closing price for this sample of stocks? The median closing price?
|
$31.69
|
56.69
|
65.50
|
83.50
|
56.88
|
|
72.06
|
121.44
|
97.00
|
42.25
|
71.88
|
|
70.63
|
35.81
|
83.19
|
43.63
|
40.06
|
2. A reference book lists the following maximum life spans (in years) for animals in captivity: Source: The World Almanac and Book of Facts 2009, p. 329.
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Beaver
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50
|
Grizzly bear
|
50
|
|
Bison
|
40
|
Horse (domestic)
|
50
|
|
Camel
|
50
|
Kangaroo
|
24
|
|
Cat (domestic)
|
37
|
Moose
|
27
|
|
Chimpanzee
|
60
|
Pig
|
27
|
|
Cow
|
30
|
Polar bear
|
45
|
|
Dog (domestic)
|
20
|
Rabbit
|
13
|
|
Asian elephant
|
77
|
Sea lion
|
34
|
|
Giraffe
|
36
|
Sheep
|
20
|
|
Goat
|
18
|
Tiger
|
26
|
|
Gorilla
|
54
|
Zebra
|
50
|
What is the mean of these maximum life spans? The median?