# Chapter 1. Measuring center: the mean

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Stat Tutor
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### Question 1.1

oSRX9MPZwWX7jYx+eBeerD/SAtnWqBI7aGpSNE3xf/entSyDmjOUqd/RG9WYV4xaJfkXsrxcSOvLN+oNAyZCGGXNxCIpbb1c+KD4m3JAnrlVFY+RqqJ5/knt9WLnzDZv+9dYKt4UanHrnnYq4IuobPKSTYr+Tj2B8qZZ8AnWHilOVOasDZCVfDaa7IO2QM/49/TLJ7VQ784P2Y6V/YfIkqfEwnZVfwXfrq5MtM/s1Xy1Pbwkj1P4KLRJLLA=
Incorrect. Mathematically, "Σ" represents summation.
Correct. Mathematically, "Σ" represents summation.
Incorrect. Try again.
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### Question 1.2

zvvqsulRHDevqIQn/H6i6f1izFSQpa2Tk37lSGmE30bnUwd33OT6QaL6HPa7AoKzfFRSikxX9B46DFLA8vdL7ThPKZFqFlMOZREmpIa2/HwkJZQ6xdDX3uzDwMhKHLx8sLtZZEeSpYOAV/P/GjvVwhmEyfzAVzUPC1IIw/Zy6qerHXEFG1ccToN4lU2Sy6PWr71u4AMMqdudhVuU1LqZNb5CCVcmfDu/VBT9SwUPHmIAvnFUw8B1a1c+j+znu5Kvc4htB9iGuuichwHV
Incorrect. The letter "n" represents sample size in statistics.
Correct. The letter "n" represents sample size in statistics.
Incorrect. Try again.
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### Question 1.3

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Incorrect. The symbol "$$\overline{x}$$" represents the mean of a sample of data.
Correct. The symbol "$$\overline{x}$$" represents the mean of a sample of data.
Incorrect. Try again.
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### Question 1.4

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Incorrect. This is a correct statement.
Correct. This is a correct statement.
Incorrect. Try again.
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