2425_Midterm Review (ENH)

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Find the mean of these numbers: 5, 11, 2, 12, 4, 2

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6

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You want to know who has a dog. You interview 100 people at Petco. This is...

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Biased

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Front

Which of the following is correct scientific notation? 20.35 x 10^4, .2035 x 10^4, 2035^4, 2.035 x10^4

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2.035 x10^4

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What is the definition of mean in statistics?

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The mean is the average of a set of numbers, calculated by dividing the sum of the numbers by the count of the numbers.

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What is the rule for simplifying powers with the same base?

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When multiplying powers with the same base, add the exponents.

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What is scientific notation?

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A way of expressing numbers that are too large or too small to be conveniently written in decimal form, using powers of ten.

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What does it mean for a sample to be biased?

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A biased sample is one that does not accurately represent the population from which it is drawn.

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What is the formula for calculating the mean?

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Mean = (Sum of all values) / (Number of values)