Standard Deviation
... mean absolute deviation – uses absolute value of each difference from the mean to eliminate the negative differences. ...
... mean absolute deviation – uses absolute value of each difference from the mean to eliminate the negative differences. ...
PSY 201 Lecture Notes Measures of Central Tendency The Frozen
... 1. (good) Theoretical. The mean has good lineage. It is part of the formula for the Normal Distribution, the most important distribution. 2. (good) Practical. The mean is generally regarded as the best measure of central tendency for unimodal and symmetric distributions with no outliers. 3. (bad) Bu ...
... 1. (good) Theoretical. The mean has good lineage. It is part of the formula for the Normal Distribution, the most important distribution. 2. (good) Practical. The mean is generally regarded as the best measure of central tendency for unimodal and symmetric distributions with no outliers. 3. (bad) Bu ...
mean
... Properties of the standard deviation(s), p41 s measures the spread about the mean x . s = 0 only when there is no spread. This happens only when all observations have the same value. s, like the mean x , is not resistant. A few outliers can make s very large. ...
... Properties of the standard deviation(s), p41 s measures the spread about the mean x . s = 0 only when there is no spread. This happens only when all observations have the same value. s, like the mean x , is not resistant. A few outliers can make s very large. ...
lab2 - Andrew.cmu.edu
... Question 6b. People do not perfectly recollect how much they smoked, so there is measurement error in the self-reports. Suppose the difference between self-reported and actual amounts of smoking is on average equal to 0, normally distributed, and unrelated to the actual price youths pay for cigaret ...
... Question 6b. People do not perfectly recollect how much they smoked, so there is measurement error in the self-reports. Suppose the difference between self-reported and actual amounts of smoking is on average equal to 0, normally distributed, and unrelated to the actual price youths pay for cigaret ...
2.4 Applications of Standard Deviation CH6 p83
... very close to the right tail of the normal curve. So to observe a clerk completing the task at 3 our 4 standard deviations away from the mean is very extreme or unlikely ( but not impossible ). In the future we will calculate the probability of clerks requiring 17 or 20 or more minutes to complete t ...
... very close to the right tail of the normal curve. So to observe a clerk completing the task at 3 our 4 standard deviations away from the mean is very extreme or unlikely ( but not impossible ). In the future we will calculate the probability of clerks requiring 17 or 20 or more minutes to complete t ...
Variable
... Correlation does not distinguish between explanatory and response variables. Correlation requires that both variables be quantitative. Because r uses the standardized values of the observations, it does not change when we change the units of measurement of x, y, or both. The correlation itself ...
... Correlation does not distinguish between explanatory and response variables. Correlation requires that both variables be quantitative. Because r uses the standardized values of the observations, it does not change when we change the units of measurement of x, y, or both. The correlation itself ...