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Earn +20 ptsQ: What does sigma means in the formula of mean value?
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What is the formula of finding mean using direct method?
formula for finding mean through direct mean method: sigma fi xi /sigma fi
Z-score responding to 10 hours?
The z-score can't be calculated with the information given. A mean & standard deviation is required to put into the formula: Z = (x-mean)/sigma. Your x value is 10.
What is the z value of a mean of 516 hours and a standard deviation of 20 hours?
The Z Value, or Z Score, does not apply to the mean, it is a representation of a piece of data. z = (x-µ)/sigma
If your mean is 33.7 and your standard deviation is 33.7 what is your z score?
Z-score is the x value minus the mean, all divided by the standard deviation; or z=(x-mu)/sigma. The "x" value needs to be given to answer the question.
What does formula mean in maths?
A formula is math sentence where you substitute numbers for letters and solve to get an unknown value.
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