The shape of a normal distribution curve looks like a bell., True, False, In a normal distribution, the mean (average) is located at the very center of the curve., True, False, The total area under the entire normal curve is equal to 50%., True, False, A z-score of 0 is located exactly at the center of the normal curve., True, False, The region to the right of z=0 represents exactly 50% of the total area., True, False, A positive z-score is always found on the left side of the center., True, False, The region 'below' a z-score means you should look at the area to the left of that value., True, False, The region between z=-1 and z=1 smaller than the region between z=-3 and z=3., True, False, The area to the left of z=-1 is the same size as the area to the right of z=1., True, False, A z-score tells you how many standard deviations a value is away from the mean., True, False, A z-score of 3.0 means the value is very close to the mean., True, False, A sample is considered 'biased' if it does not fairly represent the whole population., True, False, Using a bigger sample size usually makes the results less accurate., True, False, Random sampling is the best way to avoid bias when picking a group., True, False, A sample is always exactly the same as the population., True, False

Normal Distribution and Sampling 1

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