# 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

• 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.
• Identify biased and unbiased estimators.

#### 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.

Teacher Rate: For some courses, special tuition rates are available for current, certified P-12 teachers and administrators. Please speak with an Enrollment Representative today for more details.

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While widely available, not all programs are available in all locations or in both online and on-campus formats. Please check with a University Enrollment Representative.

Transferability of credit is at the discretion of the receiving institution. It is the student’s responsibility to confirm whether or not credits earned at University of Phoenix will be accepted by another institution of the student’s choice.