LESSON 6 - Confidence Intervals

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6.1 To Do List ... (Lesson Instructions)

During the lesson the learner will:

1:  Review the lesson instructions.

2:  Read Caldwell, Chapter 5, Confidence Intervals.

3:  Review the study questions.

4:  Watch the video "Confidence Intervals - part 1"  (10:03 minutes).

5:  Watch the video "Confidence Intervals - part 2"   (6:58).

6:  Watch the video "Confidence Intervals - part 3"    (9:22).

7.  Watch the video "Confidence Intervals - part 4"    (7:24).

8:  Watch the video "Confidence Intervals of Proportions"   (6:59).

9:  Watch the video "Confidence Level"   (13:32).

10.  Watch the video "Using Excel to Compute Confidence Intervals"   (6:23).  Then on the same page download the spreadsheet Confidence_Interval_known_s.xls for use in the lesson.

11.  Watch the video "Using Excel Data Analysis to find Confidence Intervals" (3:20).

12.  Review the solutions to select study questions.

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6.2 Reading Assignments: Chapters 5 & 6 of the Textbook

• Chapters 5 & 6 of the textbook Caldwell, S.  (2010).  Statistics Unplugged.  (3rd ed.) Thomson Wadsworth: Belmont, California.

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6.3 Study Questions

The Study Questions are for review only.  They do not have to be completed and submitted as an assignment.  Answers to selected questions may be given.

Click here to download the file Study Question Data

Click here to download the file Lesson 6 Study Questions

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6.4 Video Lecture: Confidence Interval 1 … (10:03)

In this video Dr. Bounds will discuss sampling requirements for statistical purposes and developing confidence intervals when the population standard deviation is known. Notes are provided to accompany the video. Click here to download the file Video Notes

Click play on the television or use this link to view this episode of the Lecture Series

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6.5 Video Lecture: Confidence Interval 2 … (6:58)

In this video Dr. Bounds will continue to discuss confidence intervals.

Click play on the television or use this link to view this episode of the Lecture Series

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6.6 Video Lecture: Confidence Interval 3 … (9:22)

In this video Dr. Bounds will continue discussing the topic of confidence intervals.

Click play on the television or use this link to view this episode of the Lecture Series

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6.7 Video Lecture: Confidence Interval 4 … (7:24)

In this video Dr. Bounds will conclude the discussion of the confidence interval.

Click play on the television or use this link to view this episode of the Lecture Series

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6.8 Video Lecture: Confidence Interval Proportions … (6:59)

In this video Dr. Bounds will discuss confidence intervals in situations like polling. Notes are provided to accompany the video. Click here to download the notes

Click play on the television or use this link to view this episode of the Lecture Series

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6.9 Video Lecture: Confidence Level … (13:32)

In this video Dr. Bounds will discuss probability and its role in determining confidence intervals.  Also, confidence level will be defined. Notes are provided to accompany the video. Click here to download the notes

Click play on the television or use this link to view this episode of the Lecture Series

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6.10 Video Lecture: Using Excel for Confidence Intervals … (6:23)

In this video Dr. Bounds will  demonstrate how to use Excel to find confidence intervals. An Excel file has been created to calculate confidence intervals. Click here to download the file

Click play on the television or use this link to view this episode of the Lecture Series

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6.11 Video Lecture: Using Excel Data Analysis for Confidence Intervals … (3:20)

In this video Dr. Bounds will  demonstrate how to use Excel Data Analysis to find confidence intervals.

Click play on the television or use this link to view this episode of the Lecture Series

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6.12 Solutions to Selected Study Questions (video explanations)

Below are links to video explanations of selected study questions from this lesson.  Click on the Study Question to view the video.

Study Question 1

Study Question 2

Study Question 3

Study Question 4

Study Question 9

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