24 Mar Statistical measures, shapes of statistical distributions, normal distributions, the central limit theorem, and probabilities
Order Instructions
Preparation
You have read about and practiced problems dealing with the mean, median, and mode, measures of variation, normal distribution, probability, and the law of large numbers. You now have an opportunity to test your skills on these concepts.
You can prepare by following these suggestions:
You have two chances to take the quiz (the higher score counts).
Allocate sufficient time to ensure you will be able to complete the quiz within the allotted time. There is a 120-minute time limit for the quiz.
Remember that you cannot stop and restart the test. You must answer all of the questions within one session; you cannot log out of the quiz in the middle of taking it and then go back in later to finish it.
If you have any issues or questions, contact your faculty.
Instructions
To access the quiz:
Sign into MyLab, and click the Homework and Tests link.
Select Quiz 2, which is located in the middle of the page.
Prior to starting, make sure you read the instructions and reminders located on the “Are you ready to start” page.
Once you are ready to actually start the quiz, click I am ready to start, which is located on the right-hand side of the page.
Complete questions 1–20.
Once you have submitted the quiz, your grade is recorded. You will be brought to a screen on which you can see your grade and the results of each quiz question.
Competencies Measured
By successfully completing this assessment, you will demonstrate your proficiency in the course competencies through the following assessment scoring guide criteria:
Competency 2: Solve mathematical problems using statistical methods and tools to draw conclusions.
Calculate measures of center and make conclusions using measures of center
Compare variability for different samples.
Determine and interpret the shape of a distribution.
Calculate measures of variability.
Use standard deviation as a measure of risk.
Define normal distribution.
Explain features of a normal distribution.
Identify a normal distribution from a histogram.
Use a normal distribution curve to find relative frequencies.
Use a normal distribution to find percentages.
Use a normal distribution table to find percentages.
State the central limit theorem.
Calculate mean and standard deviation for sample means.
Evaluate a probability experiment.
Identify statistically significant outcomes.
Estimate probabilities.
Determine the probability of an event.
Determine the probability of an event.
Determine the probability of an event.
Determine the expected value of a variable.
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