Learning Objectives

Chapter 9: Sampling Distributions

These are the learning objectives for this portion of the class:

  1. Define inferential statistics
  2. Graph a probability distribution for the mean of a discrete variable
  3. Describe a sampling distribution in terms of “all possible outcomes”
  4. Describe a sampling distribution in terms of repeated sampling
  5. Describe the role of sampling distributions in inferential statistics
  6. Define the standard error of the mean
  7. State the mean and variance of the sampling distribution of the difference between means
  8. Compute the standard error of the difference between means
  9. Compute the probability of a difference between means being above a specified value
  10. State how the shape of the sampling distribution of r deviates from normality
  11. Transform r to z’
  12. Compute the standard error of z’
  13. Calculate the probability of obtaining an r above a specified value
  14. Compute the mean and standard deviation of the sampling distribution of p
  15. State the relationship between the sampling distribution of p and the normal distribution

Chapter 11: Logic of Hypothesis Testing

These are the learning objectives for this portion of the class:

  1. Describe the logic by which it can be concluded that someone can distinguish between two things
  2. State whether random assignment ensures that all uncontrolled sources of variation will be equal
  3. Define precisely what the probability is that is computed to reach the conclusion that a difference is not due to chance
  4. Define “null hypothesis”
  5. Define “alternative hypothesis”
  6. Describe how a probability value is used to cast doubt on the null hypothesis
  7. Define “statistically significant”
  8. Define Type I and Type II errors
  9. Explain why the null hypothesis should not be accepted when the effect is not significant
  10. State what it means to accept the null hypothesis
  11. Discuss the problems of affirming a negative conclusion
  12. Be able to state the null hypothesis for both one-tailed and two-tailed tests
  13. Differentiate between a significance level and a probability level
  14. State the four steps involved in significance testing
  15. Determine from a confidence interval whether a test is significant
  16. State why the probability value is not the probability the null hypothesis is false
  17. Explain why a low probability value does not necessarily mean there is a large effect
  18. Explain why a non-significant outcome does not mean the null hypothesis is probably true

Assignments

There are a number of assignments this week, as usual.

Week 5 Activity

This week’s activity covers research

Quiz

Don’t forget about your chapter quizzes! Find them in the Quizzes menu in D2L.

Chapter 9 questions

Remember! For Slack posts involving chapter group questions, answers, and responses, use the following convention at the beginning of your post:

Group 3 picking their question would start with: G3Q
Group 4 answering their own question would start with: G4A
Group 5 responding to another group’s answer would start with: G5R

The Slack markup code for writing those would be: *G3Q* and so on, as *s around text make it bold.

  1. Choose a question from the end of chapter 9 in the section called “Exercises” to answer. Post the question and your answer, and make sure to justify your response.

    For example, if you determine that a type of statistic is descriptive, provide your reasoning being specific about the problem presented and your answer.

  2. Next, respond to another students’ answers by asking a question for clarification, providing a personal experience, posting a thought-provoking question, taking a controversial, but professional stand, adding something new to the conversation, quoting another student’s comment and add an additional idea based on this comment, etc.

    Your responses should be respectful and offered in a professional manner. You may wish to review the behavior Course Policies to help frame your response. Remember, you will be responding about the specific idea, issue, or question.

You may not answer a question that has been previously addressed.

Chapter 11 questions

  1. Choose a question from the end of chapter 11 in the section called “Exercises” to answer. Post the question and your answer, and make sure to justify your response.

    For example, if you determine that a type of statistic is descriptive, provide your reasoning being specific about the problem presented and your answer.

  2. Next, respond to another students’ answers by asking a question for clarification, providing a personal experience, posting a thought-provoking question, taking a controversial, but professional stand, adding something new to the conversation, quoting another student’s comment and add an additional idea based on this comment, etc.

    Your responses should be respectful and offered in a professional manner. You may wish to review the behavior Course Policies to help frame your response. Remember, you will be responding about the specific idea, issue, or question.

You may not answer a question that has been previously addressed.


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