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`0R?F?4?4,"'^?SB?": 0KT238 Statistics 2
Sample Final Exam Questions
Define:
Variable
Qualitative variable
Population
Discrete variable
Simple random sample
Sampling without replacement
Quantitative variable
Random variable
Sample
Continuous variable
For each of the following variables indicate whether it is quantitative or qualitative and specify the measurement scale that is employed when taking measurements on each:
Class standing of the members of this class relative to each other.
Admitting diagnosis of patients admitted to a mental health clinic.
Weights of babies born in a hospital during a year.
Gender of babies born in a hospital during a year.
Range of motion of elbow joint of students enrolled in a university health sciences curriculum.
Under-arm temperature of day-old infants born in a hospital.
For each of the following situations, answer questions a through e:
What is the sample in the study?
What is the population?
What is the variable of interest?
How many measurements were used in calculating the reported results?
What measurement scale was used?
Situation A: A study of 300 households in a small southern town revealed that 20 percent had at least one school-age child present.
Situation B: A study of 250 patients admitted to a hospital during the past year revealed that, on the average, the patients lived 15 miles from the hospital.
Define:
Stem and leaf display
Percentile
Box and whisker plot
Quartile
Exploratory data analysis
Frequency distribution
Relative frequency distribution
Statistic
Parameter
Histogram
Define and compare the characteristics of the mean, the median, and the mode.
What are the advantages and limitations of the range as a measure of dispersion?
What is the purpose of the coefficient of variation?
What assumptions does one make when computing the mean from grouped data? The median? The variance?
Define:
Probability
Mutually exclusive events
Independence
Marginal probability
Joint probability
Conditional probability
The addition rule
The multiplication rule
Complementary events
What is a discrete random variable? Give three examples that are of interest to the health professional.
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