MATH221 Week 1 Exam Questions with Verified Solutions Rated A+ (Already Passed)
(CO 1) Among 500 people at the concert, a survey of 35 found 28% found it too loud. What is the population and what is the sample? - Answers Population: 500 at that concert; Sample: the 35 in the survey
(CO 1) The mea...
(CO 1) Among 500 people at the concert, a survey of 35 found 28% found it too loud. What is the
population and what is the sample? - Answers Population: 500 at that concert; Sample: the 35 in the
survey
(CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this
percentage a parameter or a statistic and why? - Answers Statistic as it represents the sample
(CO 1) Classify the data of the heights of ladders produced by a tool company. - Answers Quantitative
(CO 1) The data set that lists the runs scored at each of the weekend's baseball games would be
classified as what type of data? - Answers Ratio
(CO 1) A data set that includes the years in which your hometown team won championships would be
classified as what type of data? - Answers Interval
(CO 1) What type of data collection might be best to estimate the impact of exercise on longevity? -
Answers Experiment
(CO 1) What type of data collection might be best to study how many books students bring into the
media center during finals week? - Answers Observational
(CO 1) You need to study the satisfaction of customers of a specific restaurant. You decide to order food
and talk to those customers sitting next to you. This would most closely describe which type of sampling
technique? - Answers Convenience
(CO 2) Which of the following graphs would be a dot plot? - Answers This graph has a horizontal axis
with 5 columns of vertical dots.
(CO 1) Based on past experience, we estimate that the likelihood of it raining tomorrow is 20%. This is an
example of: - Answers Inferential statistics
(CO 1) Which of the following graphs would be considered normally distributed? - Answers This is a
histogram with 5 bars. The tallest bar is in the middle. The height of the bars decreases on either side
symmetrically with the smallest bars on the far left and far right.
(CO 1) Which graph would be best to display the dispersion of ages of movie goers at the latest Marvel
Universe picture? - Answers Histogram
(CO 1) Which of the following would be the standard deviation for this sample data set: 5, 7, 6, 9, 6, 4, 4,
6, 5, 9, 3? - Answers 1.94
(CO 1) What would be the mean of this data set: 8, 9, 7, 508, 7, 1, 5, 3, 4? - Answers 61.3
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