These weekly exercises provide the opportunity for you to understand and apply statistical methods and analysis.
#1 Given the following values of the mean and median, state the likely shape of the distribution:(a) mean = 4, median = 4 _______________(b) mean = 12, median = 2 _______________(c) mean = 8, median = 18 _______________(d) mean = 6, median = 14 _______________(e) mean = 10, median = 3 _______________(f) mean = 8, median = 8 _______________
#2. IQ scores have a mean of 100 and a standard deviation of 15. What percentile corresponds to an IQ score of 115? Explain the steps you took to find the percentile.
#3. Which measure of central tendency would you use for the following variables (mean, median or mode). Explain your choice.Gender: _______________________________________________________Class rank at a college: __________________________________________________Age of high school students: ________________________________________A skewed income distribution (90% with incomes under $150K; a few with incomes of several million): ____________________________________________________Use SPSS and the data file found in syllabus resources (DATA540.SAV) to answer the following questions. Round your answers to the nearest dollar, percentage point, or whole number.
#4. What is the mean annual income (INC1) of the participants?
#5. What percent of the participants are married (RELAT)?
#6. What is the modal level of relationship happiness (HAPPY)?
#7. What is the median income of the participants’ partners (INC2)?
#8. What percent of the participants are age 51 or older?
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