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  • MA121: Introduction to Statistics
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    Course Introduction
    Course Introduction Video
    Course Syllabus
    Unit 1: Statistics and Data
    1.1: The Science of Statistics
    1.2: Descriptive and Inferential Statistics
    1.3: Types of Data and Their Collection
    1.4: Graphical Methods for Describing Data
    1.5: Measures of Central Tendency and Variability
    1.6: Methods for Describing Relative Standing
    1.7: Methods for Describing Bivariate Relationships
    Unit 1 Assessment
    Unit 2: Elements of Probability and Random Variables
    2.1: Events, Sample Spaces, and Probability
    2.2: Counting Rules
    2.3: Common Discrete Random Variables
    2.4: Normal Distribution
    Unit 2 Assessment
    Unit 3: Sampling Distributions
    3.1: Sampling Distributions
    3.2: The Sampling Distribution of Sample Mean
    3.3: The Sampling Distribution of Pearson's r
    3.4: The Sampling Distribution of the Sample Proportion
    Unit 3 Assessment
    Unit 4: Estimation with Confidence Intervals
    4.1: Point Estimators and Their Characteristics
    4.2: Confidence Intervals
    4.3: Confidence Intervals for Correlation and Proportion
    Unit 4 Assessment
    Unit 5: Hypothesis Test
    5.1: Setting Up Hypotheses
    5.2: Interpreting Hypothesis Testing Results
    5.3: Hypothesis Testing and Confidence Intervals
    5.4: Testing Single Mean
    5.5: Testing the Difference between Two Means
    5.6: Chi-Square Distribution
    5.7: Comparing the Proportions of Populations
    Unit 5 Assessment
    Unit 6: Linear Regression
    6.1: Scatter Plot of Two Variables and Regression Line
    6.2: Correlation Coefficient
    6.3: Sums of Squares
    6.4: Fitting the Model
    6.5: Influential Observations
    6.6: ANOVA
    Unit 6 Assessment
    Study Guide
    Certificate Final Exam
    Course Feedback Survey
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    MA121: Introduction to Statistics

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    Saylor Academy © 2010-2026 except as otherwise noted. Excluding course final exams, content authored by Saylor Academy is available under a Creative Commons Attribution 3.0 Unported license. Third-party materials are the copyright of their respective owners and shared under various licenses. See detailed licensing information. Saylor Academy®, Saylor.org®, and Harnessing Technology to Make Education Free® are trade names of the Constitution Foundation, a 501(c)(3) organization through which our educational activities are conducted.