stat_analysis_ws - 1. a) mean and standard deviation, 68%...

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1. a) mean and standard deviation, 68% b) shifts right c) shifts left d) stretches distribution, curve flatter e) narrows distribution, curve taller f) shape doesn’t change 2. a) to show the scatter around the mean b) standard deviation: a measure of how extensively the measured values of a random variable spread out away from the mean standard error of the mean: expression of accuracy; measure of how close the measurements are to the target value confidence interval: the probability that a value will fall within the interval The standard error is misleading while the standard deviation is a more accurate depiction of the data. c) The male sample mean is 177.7 cm while the women sample mean is 162cm. Males’ average height taller than women d) Male – 8.1 cm; Female – 6.2 cm. Females’ heights cluster more around the mean e) Male – 0.4 cm; Female – 0.3cm. Females have smaller standard error f) Male: 177.0cm – 178.4cm; Female: 161.5cm – 162.5cm. Males have a larger 95% confidence interval
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stat_analysis_ws - 1. a) mean and standard deviation, 68%...

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