Make sure to read carefully and to show as much work as possible. Partial credit

Question

Make sure to read carefully and to show as much work as possible. Partial credited will be awarded. When doing calculations, you are to round off to one decimal place (e.g. 1.3, not 1.3102.... art 1 1) Identify whether the following data is Continuous, Ordinal, Categorical, or Dichotomous a. Hair color of men on a college soccer team b. Weight of a newborn infant in ounces c. Amazon ratings for headphones d. Salaries of nurses in New York Presbyterian Hospital in dollars e. Whether someone drinks or not f. Stages of lung cancer g. Religious affiliation h. Number of cigarettes smoked in an hour i. Gender j. The likelihood that you'll get all these right 2) Determine whether the following information is considered a parameter or a statistic. a. Out of 100 students, 36 say they want to study nutrition. b, 43% of Americans think that global warming is a myth. c. The average career length of a doctor is 30 years. d. 4 out of 5 dentists recommended flossing regularly. e. 5 metropolitan hospitals charge an average of $1000/ night for in-patient care. 3) A psychologist is interested in whether fear is effective in reducing the incidence of smoking. Forty adult smokers are selected from an NYC neighborhood. Twenty are asked to smoke a cigarette, after which they see a film about how smoking causes cancer. Vivid pictures of diseased lungs and other internal organs of deceased smokers are shown to instill fear of smok in these subjects. The other group receives the same treatment, except they see a film that is unrelated to smoking. For 2 months after showing the film, the experimenter keeps records on the number of cigarettes smoked daily by the participants. They then compare the average amounts of cigarettes.

Explanation / Answer

1. a) there are different colors of hair so it is a categorical variable.

b) Weight is a continuous variable.

c) rating can arrange in order so it is ordinal level of measurement.

d) Salaries is a ratio scale example and so it is continuous type of measurement.

e) there are only two outcomes so it is the type of dichotomous type of measurement.

f) There are first stage, second stage, and so on so that is is ordinal type variable.

g) Religious affiliation can be categorized so it is categorical variable.

h) This is the discrete variable and we can categorized it into different parts.

i) Gender is a dichotomous type variable

j) The right can be in different categories, so it is a categorical type variable.

2. a) The study conducted among only 100 students and not all the units(students) so it is a statistic.

b) The result from all the Americans so that is is a parameter.

c) If the result is based on all the doctors then it is parameter.

d) the result based on only 5 dentist so it is statistic

e) this is also a statistic because it is based on only 5 units and not based on all the units.

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