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Chapter 2 - Organizing and Visualizing Variables in Business Statistics

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Intro to Stats

  • Percorso guidato
    Parameters vs. Statistics
    05:53
  • Percorso guidato
    Types of Data
    04:24

Intro to Collecting Data

  • Percorso guidato
    Introduction to Collecting Data
    4:01

Sampling Methods

  • Percorso guidato
    Simple Random Sampling
    04:17
  • Percorso guidato
    Simple Random Sampling Example 1
    01:30
  • Percorso guidato
    Sampling Methods Example 2
    03:07

Visualizing Qualitative vs. Quantitative Data

  • Percorso guidato
    Visualizing Qualitative vs. Quantitative Data
    04:39

Frequency Distributions

  • Percorso guidato
    Intro to Frequency Distributions Example 1
    06:19
  • Percorso guidato
    How to Create Frequency Distributions Example 2
    05:18
  • Percorso guidato
    How to Create Frequency Distributions
    06:29

Histograms

  • Percorso guidato
    Intro to Histograms
    05:54

Bar Graphs and Pareto Charts

  • Percorso guidato
    Creating Bar Graphs and Pareto Charts
    04:52
  • Percorso guidato
    Example 1
    05:26

Pie Charts

  • Percorso guidato
    Example 1
    01:18
  • Percorso guidato
    Creating Pie Charts
    06:10

Frequency Polygons

  • Percorso guidato
    Creating Frequency Polygons
    04:41
  • Percorso guidato
    Example 1
    04:15

Dot Plots

  • Percorso guidato
    Creating Dotplots
    04:01

Stemplots (Stem-and-Leaf Plots)

  • Percorso guidato
    Example 1
    06:09
  • Percorso guidato
    Creating Stemplots
    06:23

Time-Series Graph

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

Mean

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

Median

  • Percorso guidato
    Comparing Mean vs. Median Example 2
    04:56
  • 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

Percentiles & Quartiles

  • Percorso guidato
    Percentiles and Quartiles
    07:11
  • Percorso guidato
    Percentiles and Quartiles Example 1
    04:30

5-Number Summary Using a TI-84

  • Percorso guidato
    Find 5-Number Summary - TI-84 Calculator
    04:51
  • Percorso guidato
    Find 5-Number Summary - TI-84 Calculator Example 1
    05:45

Boxplots

  • Percorso guidato
    Boxplots Example 1
    01:52
  • Percorso guidato
    Boxplots ("Box and Whisker Plots")
    03:54
  • Percorso guidato
    Boxplots Example 2
    02:48

Descriptive Statistics-Excel

  • Percorso guidato
    Descriptive Statistics-Excel
    06:10
  • Percorso guidato
    Descriptive Statistics-Excel Example 1
    05:30

Boxplots-Excel

  • Percorso guidato
    Boxplots-Excel
    05:14
  • Percorso guidato
    Boxplots-Excel Example 1
    03:30

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 Confidence Intervals Using TI-84
    04:30
  • Percorso guidato
    Critical Values: t-Distribution Example 2
    04:06
  • Percorso guidato
    Population Standard Deviation Unknown Example 3
    09:00

Steps in Hypothesis Testing

  • Percorso guidato
    Intro to Hypothesis Testing
    05:12
  • Percorso guidato
    Step 3: Get P-Value
    06:50
  • Percorso guidato
    Step 2: Calculate Test Statistic
    06:34

Performing Hypothesis Tests: Means

  • Percorso guidato
    Standard Deviation (σ) Known Example 2
    04:53
  • Percorso guidato
    Standard Deviation (σ) Known Example 3
    06:51
  • Percorso guidato
    Standard Deviation (σ) Unknown Example 4
    06:13

Performing Hypothesis Tests: Proportions

  • Percorso guidato
    Performing Hypothesis Tests: Proportions Example 1
    03:32
  • Performing Hypothesis Tests: Proportions
    05:52
  • Performing Hypothesis Tests: Proportions Example 1
    07:06

Two Proportions

  • Percorso guidato
    Difference in Proportions: Hypothesis Tests Example 1
    10:28
  • Percorso guidato
    Difference in Proportions: Confidence Intervals Example 2
    09:24
  • Percorso guidato
    Two Proportions Inferences Using a TI-84
    05:01

Two Means - Unknown, Unequal Variance

  • Percorso guidato
    Difference in Means: Confidence Intervals
    08:21
  • Percorso guidato
    Difference in Means: Confidence Intervals Using TI-84
    05:22
  • Percorso guidato
    Difference in Means: Hypothesis Tests Example 1
    07:32

Two Means - Unknown, Equal Variance

  • Percorso guidato
    Means Unknown Equal Variances Hypothesis Test Using TI-84
    06:20
  • Percorso guidato
    Means Unknown Equal Variances Hypothesis Test Using TI-84 Example 1
    03:10
  • Percorso guidato
    Means Unknown Equal Variances Hypothesis Test Using TI-84 Example 2
    03:34

Two Means - Known Variance

  • Percorso guidato
    Means Known Variances Hypothesis Test Using TI-84
    05:05
  • Percorso guidato
    Means Known Variances Hypothesis Test Using TI-84 Example 1
    02:51
  • Percorso guidato
    Means Known Variances Hypothesis Test Using TI-84 Example 2
    02:44

Introduction to ANOVA

  • Percorso guidato
    ANOVA Test
    05:31
  • Percorso guidato
    ANOVA Test Using TI-84 Example 1
    02:43
  • Percorso guidato
    Introduction to ANOVA
    06:46

Goodness of Fit Test

  • Percorso guidato
    Goodness of Fit Test
    10:17
  • Percorso guidato
    Goodness of Fit Test: Unequal Probabilities
    05:24
  • Percorso guidato
    Goodness of Fit Test: Unequal Probabilities Example 2
    08:22

Contingency Tables

  • Percorso guidato
    Contingency Tables & Expected Frequencies
    08:18

Independence Tests

  • Percorso guidato
    Independence Test
    06:28
  • Percorso guidato
    Independence Test Example 1
    08:07

Homogeneity Tests

  • Percorso guidato
    Homogeneity Test Example 1
    06:28
  • Percorso guidato
    Homogeneity Test
    05:27

Scatterplots & Intro to Correlation

  • Percorso guidato
    Scatterplots & Intro to Correlation
    06:36
  • Percorso guidato
    Creating Scatterplots - Graphing Calculator
    05:26
  • Percorso guidato
    Scatterplots & Intro to Correlation Example 1
    05:14

Correlation Coefficient

  • Percorso guidato
    Calculating Correlation Coefficient - Graphing Calculator Example 1
    03:44
  • Percorso guidato
    Correlation Coefficient
    05:43
  • Percorso guidato
    Calculating Correlation Coefficient - Graphing Calculator
    04:40

Linear Regression & Least Squares Method

  • Percorso guidato
    Intro to Least Squares Regression
    07:01
  • Percorso guidato
    Using Regression Lines to Predict Values
    04:57
  • Percorso guidato
    Intro to Least Squares Regression Example 1
    05:02

Residuals

  • Percorso guidato
    Residuals and Residual Plots
    07:38

Coefficient of Determination

  • Percorso guidato
    Coefficient of Determination
    06:14

Inferences for Slope

  • Percorso guidato
    Hypothesis Test for the Slope of a Regression Line Example 2
    02:59
  • Percorso guidato
    Confidence Interval for the Slope of a Regression Line
    03:12
  • Percorso guidato
    Hypothesis Test for the Slope of a Regression Line Example 3
    04:13

Prediction Intervals

  • Percorso guidato
    Prediction Intervals
    09:00