In the Waite et al. (2015) dataset, the ages of the subjects’ siblings with autism were as follows: a. Calculate the mode of the scores. b. Calculate the median of the scores. c. Calculate the mean of the scores. d. Calculate the 7.7% trimmed mean of the scores. e. Compare your models of central tendency. Are they close to one another, or is there a model that differs from the others? What does that mean when trying to ascertain the middle of the distribution? f. Calculate the range of the scores. g. Calculate the standard deviation of the scores. Assume that you want to use the data in this sample to estimate the population standard deviation. h. Calculate the variance of the scores. Assume that you want to use the data in this sample to estimate the population variance. i. In Guided Practices 4.1 and 4.2, we learned that the age of the subjects had a mean of 25.69 and a standard deviation of 6.45. How do these descriptive statistics compare to the mean and standard deviation of the siblings’ ages?
In the Waite et al. (2015) dataset, the ages of the subjects…
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