23 Jul WHAT INFORMATION DOES RANGE PROVIDE ABOUT A DATA SET?
PSY315 Week 2 DQWatch Segment 3, Measures of Central Tendency:
Mode, Median and Mean, of the Organizing Quantitative Data
video, located in this week’s Electronic Reserve Readings.
1. Which measure is not affected by outliers? Why?
Watch Segment 5, Measures of Dispersion: Range
and Standard Deviation, of the Organizing Quantitative Data
video, located in this week’s Electronic Reserve Readings.
2. What information does range provide about a data
set?
Watch Segment 1, Probability Distributions for
Random Variables, of the Normal Distribution for Continuous Random
Variable video, located in this week’s Electronic Reserve Readings.
3. What percentages represent the standard normal
distribution for continuous random variables according to the empirical rule?
4. Compare the three different measures of central
tendency.
5. Are all measures of central tendency appropriate
for all scales of measurement? Why or why not?
6. How is a sample mean different than a population
mean?
7. How is the variance related to the standard
deviation of a data set?
8. How does the empirical rule relate to the
standard deviation?
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