Chapter 14

Section 14.5: Sampling

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14.5 Outline

  1. Sampling methods
    1. inferential statistics
    2. sample
    3. population
    4. target population
    5. inference procedure
  2. Hypothesis testing
    1. types of error
      1. type I
      2. type II
    2. fallacy of exceptions

 

14.5 Essential Ideas

There are two types of sampling errors:

Type I: Rejection of the … See the whole entry

Section 14.4: Correlation and Regression

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14.4 Outline

  1. Regression analysis
    1. correlation
    2. least squares method
    3. scatter diagram
    4. linear correlation coefficient
    5. significance level
  2. Best-fitting line
    1. least-squares line
    2. formulas

 

14.4 Essential Ideas

14.4.1… See the whole entry

Section 14.3: The Normal Curve

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14.3 Outline

  1. Cumulative distributions
  2. Bell-shaped curves
    1. normal distribution
    2. continuous distribution
    3. variations of normal curves
  3. z-scores
    1. standard normal distribution table
    2. formula
    3. normal curve interpretations

 

14.3 Essential Ideas

A cumulative frequency is one for which the total number of cases having … See the whole entry

Section 14.2: Descriptive Statistics

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14.2 Outline
  1. Measures of Central Tendency
    1. mean
    2. median
    3. mode
    4. weighted mean
  2. Measures of Position
    1. quartiles
    2. deciles
    3. percentiles
  3. Measures of Dispersion
    1. range
    2. boxplot
    3. variance of the population
    4. variance of a random sample
    5. standard deviation

 

14.2 Essential Ideas

Averages or measures … See the whole entry

Section 14.1: Frequency Distributions and Graphs

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14.1 Outline

  1. Frequency distribution
    1. interval
    2. frequency
    3. definition
    4. grouped frequency distribution
    5. stem-and-leaf plot
    6. graph
  2. Bar graphs
  3. Line graphs
  4. Circle graphs
  5. Pictograph’s
  6. Misuses of graphs

 

14.1 Essential Ideas

The classification and tabulation of data into classes is called a frequency distribution. … See the whole entry