Statistics Test Questions - 1...

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1. The ages of employees at a small software development company, Crackerjack Networks, are listed below.  What is the  mean  age of Crackerjack employees? Crackerjack Network Employees Source 24 25 25.25 24.5 2. The ages of employees at a small software development company, Crackerjack Networks, are listed below. In the event that Natasha Kramerbauer leaves the company to enter an MBA program, what is the  median  age of the remaining seven employees? 24 25 25.25
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24.5 3. The histogram below graphically represents the distribution of the number of passengers embarking from the 135  busiest airports in the United States in 1990.  This distribution is: Uniform. Symmetric. Bimodal. Skewed right. 4. The histogram below graphically represents the distribution of the number of passengers embarking at the 135  busiest airports in the United States in 1990.  Which of the following statements can be inferred from this histogram?
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The mean number of passengers embarking per airport is greater than the median number of passengers embarking  per airport. The median number of passengers embarking per airport is greater than the mean number of passengers embarking  per airport. The mean and median numbers of passengers embarking per airport are equal. The relative sizes of the mean and median numbers of passengers embarking per airport cannot be inferred from the  histogram. 5. The scatter diagram below plots last week's sales and prices of 28 models of portable DVD players at a consumer  electronics retailer.  Which of the following best characterizes the relationship between units sold and price? Negative and linear. Positive and linear. Positive and nonlinear. Negative and nonlinear. 6. The correlation coefficient of two variables is -1. This means that: There is no linear relationship between the two variables.
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There is a perfect linear relationship between the two variables. The two variables are statistically independent. There is a strong nonlinear relationship between the two variables. 7. Stock 1's closing price over the last month has a mean of 31.2 and a standard deviation of 1.9. Stock 2's closing price over the last month has a mean of 59.2 and a standard deviation of 3.3.  Which has the higher coefficient of variation? Stock 1. Stock 2. The coefficients of variation are the same. The answer cannot be determined from the data provided.
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