Week 3 S20.docx - Week 3 Assignment Due February 2nd 11:59pm 1 Answer and send me the following(1\/2 point each a Describe the three measures of central

# Week 3 S20.docx - Week 3 Assignment Due February 2nd...

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Week 3 Assignment Due February 2 nd , 11:59pm 1) Answer and send me the following (1/2 point each): a. Describe the three measures of central tendency (mean, median, and mode). i. Mean: the mathematical average ii. Median: the middle scores iii. Mode: the one score that shows up the most often b. Describe standard deviation and variance. i. Standard deviation: the square root of the variance; on average how far away, the scores are from the mean ii. Variance: how spread out the scores are c. What is an outlier? Give me an example. i. An outlier is a score that falls way apart from the average d. Describe at least three advantages of z-scores. i. A z-score represents the difference of scores, how far a score is from the average, and a way of compare and contrast multiple differences of scores 2) Calculate z-scores for the following (1/2 point each): a. An IQ score of 115 (mean of 100 and SD of 15) i. Z = 115-100/15 : z = 15/15 : z = 1.00 b. An IQ score of 135 (same mean and SD as above) i. z = 135-100/15 : z = 35/15 : z = 2.33 c.

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• Spring '13
• ToddDaniel
• Standard Deviation, 5 minutes, 6 minutes, 40 seconds, 25 seconds
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