FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Given the following information, find the z-value for the sample. (Hint:z = (x-bar-
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2.40
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3.00
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2.78
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6.90
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Explanation:
Detailed explanation-1: -The value for z is calculated by subtracting the value of the average daily return selected for the test, or 1% in this case, from the observed average of the samples. Next, divide the resulting value by the standard deviation divided by the square root of the number of observed values.
Detailed explanation-2: -The formula for calculating a z-score is z = (x-)/, where x is the raw score, is the population mean, and is the population standard deviation. As the formula shows, the z-score is simply the raw score minus the population mean, divided by the population standard deviation.
There is 1 question to complete.