st095 »

Table of Contents


Central Limit Theorem

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

Interval estimate (see “Confidence Interval”)

Lurking variables

  • Solution - Lurking variables are extraneous factors

Margin of error

Mean

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

  • Quiz - Find the median
  • Quiz - Find median using spreadsheet

Mode

  • Quiz - Mode of data values
  • Quiz - Mode of distribution

Normal Distribution

Operational definition

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

Outlier

  • Quiz - Formal definition of “outlier”

Percentile

Point estimate

  • Solution - Best guess for new population mean
  • Solution - Generalize point estimate

Probability

  • Quiz - Probability less
  • Quiz - Probability less
  • Quiz - Probability more
  • Quiz - Probability between

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