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A sample of 20 financial analysts was asked to provide forecasts of earnings per share of a corporation for next year. The results are summarized in the following table:
Forecast ($ per share) Number of Analysts
$9.95 to under $10.45 .......... 2
$10.45 to under $10.95 ......... 8
$10.95 to under $11.45 ......... 6
$11.45 to under $11.95 ......... 3
$11.95 to under $12.45 ......... 1
a. Estimate the sample mean forecast.
b. Estimate the sample standard deviation. |
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