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Introductory Statistics Exam 1 Study Guide: Key Concepts and Methods

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Levels of Measurement

  • Percorso guidato
    Levels of Measurement
    06:52
  • Percorso guidato
    Levels of Measurement Example 1
    02:46
  • Percorso guidato
    Levels of Measurement Example 2
    02:46

Sampling Methods

  • Percorso guidato
    Sampling Methods Example 2
    03:07
  • Percorso guidato
    Simple Random Sampling Example 1
    01:30
  • Percorso guidato
    Sampling Methods
    05:27

Histograms

  • Percorso guidato
    Intro to Histograms
    05:54
  • Percorso guidato
    How to Create Histogram - TI-84 Calculator
    07:10

Time-Series Graph

  • Percorso guidato
    Time-Series Graphs Example 1
    04:36
  • Percorso guidato
    Creating Time-Series Graphs
    04:13

Mean

  • Percorso guidato
    Calculating the Mean
    04:52
  • Percorso guidato
    Calculating the Mean Example 1
    03:08

Median

  • Percorso guidato
    Comparing Mean vs. Median
    04:48
  • Percorso guidato
    Calculating the Median Example 1
    02:35
  • Percorso guidato
    Calculating the Median
    03:26

Mode

  • Percorso guidato
    Mode
    03:20

Standard Deviation

  • Percorso guidato
    Calculating Standard Deviation
    08:45
  • Percorso guidato
    Calculating Standard Deviation Example 1
    02:59

Basic Concepts of Probability

  • Percorso guidato
    Introduction to Probability
    5:37

Multiplication Rule: Dependent Events

  • Percorso guidato
    Conditional Probability Rule Example 1
    03:06
  • Percorso guidato
    Multiplication Rule: Dependent Events
    05:17
  • Percorso guidato
    Conditional Probability Rule
    03:53

Addition Rule

  • Percorso guidato
    Probability of Mutually Exclusive Events
    5:14
  • Percorso guidato
    Probability of Non-Mutually Exclusive Events Example
    2:57
  • Percorso guidato
    Probability of Non-Mutually Exclusive Events
    5:14

Multiplication Rule: Independent Events

  • Percorso guidato
    Probability of Multiple Independent Events
    05:54

Standard Normal Distribution

  • Percorso guidato
    Z-Scores from Probabilities
    08:50
  • Percorso guidato
    Probabilities Between Two Values
    03:50
  • Percorso guidato
    Finding Standard Normal Probabilities using z-Table
    09:47

Sampling Distribution of the Sample Mean and Central Limit Theorem

  • Percorso guidato
    Central Limit Theorem Example 1
    02:33
  • Percorso guidato
    Central Limit Theorem
    05:14
  • Percorso guidato
    Sampling Distribution of Sample Mean
    06:53

Introduction to Confidence Intervals

  • Percorso guidato
    Critical Values: z Scores
    04:46
  • Percorso guidato
    Introduction to Confidence Intervals
    06:33

Confidence Intervals for Population Mean

  • Percorso guidato
    Finding t-Values Using a TI-84
    05:47
  • Percorso guidato
    Critical Values: t-Distribution
    05:50
  • Percorso guidato
    Finding Confidence Intervals Using TI-84
    04:30

Steps in Hypothesis Testing

  • Percorso guidato
    Step 4: State Conclusion
    09:56
  • Percorso guidato
    Step 2: Calculate Test Statistic
    06:34
  • Percorso guidato
    Step 1: Write Hypotheses
    06:21

Type I & Type II Errors

  • Percorso guidato
    Type I & Type II Errors Example 1
    03:21
  • Percorso guidato
    Type I & Type II Errors
    06:02

Performing Hypothesis Tests: Means

  • Percorso guidato
    Standard Deviation (σ) Unknown Example 3
    05:55
  • Percorso guidato
    Standard Deviation (σ) Known Example 1
    06:38
  • Percorso guidato
    Standard Deviation (σ) Known
    06:34