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IHP 525 quiz one
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Updated on: 09/08/2019 09:08 PM Due on: 09/09/2019
 Prospective studies on nutrition often require subjects to keep detailed daily dietary logs. In contrast, retrospective studies often rely on recall. Which method (dietary logs or retrospective recall) do you believe is more likely to achieve accurate results? Explain your response.
 We often have a choice of whether to record a given variable on either a quantitative or a categorical scale. How does one measure age quantitatively? Provide an example by which age can be measured categorically

 Could the number “0000” appear in a table of random digits? If so, how likely is this?
 Body weights of 18 diabetics expressed as a percentage of ideal (defined as body weight divided by ideal body weight x 100) are listed: {107, 119, 99, 114, 120, 104, 88, 114, 124, 116, 101, 121, 152, 100, 125, 114, 95, 117}. Construct a stemandleaf plot of these data and interpret your findings.
 Name three measures of central location.
 To assess the air quality in a surgical suite, the presence of colonyforming spores per cubic meter of air is measured on three successive days. The results are as follows: {12, 24, 30}. Calculate the mean and standard deviation for these data.
 In a lottery game, a person must select 5 numbers from a total of 40. Tracy has chosen 7, 8, 9, 10, 11. Jaime has chosen 39, 17, 37, 5, 28. Who has a greater chance of winning?
 In a box, there are 8 orange, 7 blue, and 6 red balls. One ball is selected randomly. What is the probability that it is neither orange nor red?
 is a numerical quantity that takes on different values depending on chance. There are two types of random variables. \\ form a countable set of possible values. \ form an unbroken continuum of possible values.


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Solution: IHP 525 quiz one
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