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Answer T for True or F for False or pick an answer A thru D. 1. Coding men as 1, women as 2, and children as 3 is an example of the interval level of measurement. 2. The monthly salaries of a sample of 100 employees were rounded to the nearest ten dollars. They ranged from a low of $720.00 to a high of $1, 720.00. If we want to condense the data into seven classes, calculate the most appropriate class interval? A. $50 B. $300 C. $150 D. $100 3. Given a normally distributed, bell shaped, symmetrical data set, the empirical rule says 95% of the values will always lie within +/- 2 standard deviation of the mean. 4. In a negatively skewed distribution, the mean is larger than the median and the mode. 5. When we work with grouped data in statistics, we are getting actual, not estimated results. 6. The branch of statistics where we draw conclusions about the population based on sample data is called inferential statistics. 7. Based on the Applewood Auto handout 1.3 we concluded that the sales manager's profit challenge had been met. 8. We know that our selected class interval is OK if the resulting frequency distribution contains the required number of classes. 9. The relationship (x + >) lies at the heart of the calculation for sample standard deviation "g". 10. According to the Rule of Thumb Table for determining recommended number of classes, if you have 130 observations you should build your frequency distribution using & classes. 11. Including a really expensive house in your survey of home prices will skew the mean house price in a positive direction 12. The arithmetic mean is useful when calculating the percentage of change over time. 13. A statistics class with a high standard deviation of scores on Exam I will be more worrisome to the instructor than a class with a low standard deviation on Exam 1. 14. An investment with a standard deviation return on investment of s = 6.1 is more risky than an investment with a standard deviation return of s = 4.7