Answer:
A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.
Step-by-step explanation:
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Answer:
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Step-by-step explanation:
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<span>CD=AC it is shown in diagram so which means AC is bisected</span>
Answer: First box=3, second box=4, third box=0, last box=2
Step-by-step explanation: Do the math for the boxes.
Because n > 30, the sampling distribution of the mean ages can be approximated by a normal distribution with mean µ and standard deviation σ ÷ √(45) .The central limit theory applies whenever n > 30. Because n > 30, the sampling distribution of the mean ages can be approximated by a normal distribution with mean µ and standard deviation σ ÷ √(n) .