Question
Stock prices: Following are closing prices for a certain stock during June and July of a...
Stock prices: Following are closing prices for a certain stock during June and July of a certain year.
June 472.68 472.08 454.26 444.95 482.37 493.37 498.72 485.52 484.78 474.02 487.01 488.50 483.19 497.99 488.56
July 491.34 494.02 459.61 466.18 481.59 477.50 484.81 490.06 488.97 492.63 484.35 484.99 484.85 439.49 436.55
(a) Find the population standard deviation and variance for the prices in June. Round the answers to at least three decimal places.
| The population standard deviation
for the prices in June is
14.949 .The population variance for the prices in June is 256.704 . |
(b) Find the population standard deviation and variance for the prices in July. Round the answers to at least three decimal places.
| The population standard deviation
for the prices in July is
17.847 .The population variance for the prices in July is 341.264 . |
Homework Answers
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