Statistics

Statistics

Chapter 7 Review

Below is an outline of the major points covered in Chapter 7. You will need to clearly understand the concepts, terms and calculation presented in Chapter 7. You may need to refer back to previous chapters as we progress through the text. All concepts build from each other.

Outline

Chapter 7: Statistical Estimations

Estimation Terms

Define: •

Standard deviation

Variance

• • •

Standard error of the mean

Confidence interval

Estimation Calculations

Calculate: •

Standard deviation (sample and population) • Variance • Standard error of the mean • Confidence interval

Statistical Application

You should know how to apply the critical t-value and be able to interpret the estimation values calculated.

Ch. 7 Fill in the Blank

1. _______________ is the average of the squared differences from the mean

2. ___________________ is used to indicate the reliability of a statistical estimate; meaning how confident our we in our estimation

3. N-1 is also referred to as the _______________________.

4. t is the critical value and found in a ___ table.

5. _______________ is the standard deviation of the estimate of the sample mean of a given population mean.

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