# Statistics II

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Students apply elementary probability theory, descriptive and inferential statistics, and reasoning to real-world situations. The course embeds foundational skill into topics including probability, statistics, and reasoning.

This undergraduate-level course is 5 weeks To enroll, speak with an Enrollment Representative.

#### Course details:

Credits: 3
Continuing education units: XX
Professional development units: XX
Duration: 5 weeks

#### Confidence Intervals and Estimates

• Identify biased and unbiased estimators.
• Review of sample versus populations and parameters versus statistics.
• Calculate and interpret confidence intervals for proportions and means.
• Calculate the required sample size to estimate a population proportion and mean.
• Solve real world applications.

#### Correlation and Regression

• Interpret the slope and intercepts of a line.
• Interpret the correlation of data from a graph.
• Use technology to graph data, create a trend line, and calculate the equation of the trend line.
• Calculate and interpret the correlation coefficient for a set of paired data.
• Use the results of the regression line equation for predictions.
• Solve real world applications.

#### Hypothesis Testing

• Discuss how confidence intervals relate to hypothesis testing.
• Use the P value approach to test a hypothesis.
• Perform the 5 steps in hypothesis testing with one-and two-tailed z-tests.
• Perform the 5 steps in hypothesis testing with one-and-two- tailed "t" tests.
• Discuss possible type 1 and type 2 errors in hypothesis testing.

#### Applications

• Use statistics to analyze application problems.

#### Sampling Distributions and Central Limit Theorem

• Explain the purpose of sampling distributions.
• Explain how sampling error affects the need for sampling distributions.
• Calculate the mean and standard deviation of a variable given mean and standard deviation of a population.
• Apply the central limit theorem.
• Determine the sampling distribution of the sample mean.
Tuition for individual courses varies. For more information, please call or chat live with an Enrollment Representative.