st095 »

**Central Limit Theorem**

- Instruction - Central Limit Theorem definition

**Confidence Interval**

- Instruction - Formula for confidence interval
- Solution - Find 95% confidence interval

**Constructs**

- Instruction - Definition of “constructs”
- Quiz - Which are constructs?
- Quiz - Match constructs with operational definitions

**Critical values of z**

- Quiz - Critical values for 95% confidence
- Quiz - Critical values for 98% confidence
- Instruction - Definition of “critical values of z”

**Decision errors**

- Quiz - Probability of Type I error (Coming soon!)

**Distribution**

**Frequency**

- Quiz - Tally the frequency

**Histogram**

- Solution - Create histogram

**Interval estimate** (see “Confidence Interval”)

**Lurking variables**

- Solution - Lurking variables are extraneous factors

**Margin of error**

- Instruction - definition of “margin of error”

**Mean**

- Quiz - Find the mean
- Instruction - Formula for mean
- Quiz - Calculate mean using spreadsheet

**Measures of Center**

- Solution - Mean, median, and mode
- Quiz - Measures of center for skewed distribution
- Quiz - Measures of center for normal distribution
- Quiz - Summarize measures of center

**Median**

**Mode**

**Normal Distribution**

- Instruction - Properties of normal distribution
- Instruction - Area under PDF

**Operational definition**

- Instruction - Definition of “operational definition”
- Quiz - Match constructs with operational definitions

**Outlier**

- Quiz - Formal definition of “outlier”

**Percentile**

- Instruction - Definition of percentile

**Point estimate**

**Probability**

**Random**

- Instruction - Definition of “randomness”
- Quiz - Which are random samples?

**Relative frequency**

- Quiz - Calculate relative frequencies

**Sampling distribution**

- Quiz - Definition, shape of sampling distribution
- Instruction - Standard deviation of sampling distribution
- Quiz - Mean of sampling distribution
- Solution - Standard deviation of sampling distribution

**Standard deviation**

- Instruction - What is standard deviation, how to find it
- Quiz - Calculate standard deviation
- Quiz - Calculate standard deviation with spreadsheet
- Quiz - Sample standard deviation

**Standard error**

- Quiz - What is standard error?

**Sum of Squares**

- Quiz - Formula for sum of squares

**Type I Error** (see “Decision errors”)

**Type II Error** (see “Decision errors”)

**Variance**

- Solution - Definition of “variance”

**Z-scores**

- Instruction - Z is the number of standard deviations
- Solution - Standard Normal distribution
- Quiz - Z-scores of sample means

**Z-table**

- Instruction - Intro to z-table
- Quiz - Use the z-table