The table shows the performance of a selection of 98 stocks after one year. (Take S to be the set of all stocks represented in the table. If a stock stayed within 20% of its original value, it is classified as "unchanged".) Companies Pharmaceutical Electronic Internet P E I Total Increased 12 1 15 28 V Unchanged 30 12 42 N Decreased 12 15 28 Total 54 2 42 98 n(D n I) n(D) Calculate 2.5 What does the answer represent? n(D n I) is the fraction of increasing stocks that were Electronic stocks. n(D) n(D n I) n(D) is the fraction of unchanged stocks that were Internet stocks. n(D n I) n(D) stocks. is the fraction of decreasing stocks that were Pharmaceutical n(D n I) n(D) is the fraction of decreasing stocks that were Internet stocks. n(D n I) n(D) is the fraction of decreasing stocks that were Electronic stocks.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.2: Representing Data
Problem 19PFA
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The table shows the performance of a selection of 98 stocks after one year. (Take S to be the set of all stocks represented in the table. If a stock stayed within 20% of its
original value, it is classified as "unchanged".)
Companies
Pharmaceutical
Electronic
Internet
P
E
I
Total
Increased
12
1
15
28
V
Unchanged
30
12
42
N
Decreased
12
15
28
Total
54
2
42
98
n(D n I)
n(D)
Calculate
2.5
What does the answer represent?
n(D n I)
is the fraction of increasing stocks that were Electronic stocks.
n(D)
n(D n I)
n(D)
is the fraction of unchanged stocks that were Internet stocks.
n(D n I)
n(D)
stocks.
is the fraction of decreasing stocks that were Pharmaceutical
n(D n I)
n(D)
is the fraction of decreasing stocks that were Internet stocks.
n(D n I)
n(D)
is the fraction of decreasing stocks that were Electronic stocks.
Transcribed Image Text:The table shows the performance of a selection of 98 stocks after one year. (Take S to be the set of all stocks represented in the table. If a stock stayed within 20% of its original value, it is classified as "unchanged".) Companies Pharmaceutical Electronic Internet P E I Total Increased 12 1 15 28 V Unchanged 30 12 42 N Decreased 12 15 28 Total 54 2 42 98 n(D n I) n(D) Calculate 2.5 What does the answer represent? n(D n I) is the fraction of increasing stocks that were Electronic stocks. n(D) n(D n I) n(D) is the fraction of unchanged stocks that were Internet stocks. n(D n I) n(D) stocks. is the fraction of decreasing stocks that were Pharmaceutical n(D n I) n(D) is the fraction of decreasing stocks that were Internet stocks. n(D n I) n(D) is the fraction of decreasing stocks that were Electronic stocks.
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