Because Statistical Software Plays Such an Important Role in Modern

question 40

Multiple Choice

Because statistical software plays such an important role in modern statistical applications,many studies have encouraged the use of technology in statistics courses.The Guidelines for the Assessment and Instruction in Statistics Education (GAISE) (Aliaga et al. ,2005) project was funded by the American Statistical Association to examine needs for college level statistics courses.One of the six recommendations from GAISE is the use of technology for developing conceptual understanding and analyzing data.A survey was sent to students at 100 different universities across the United States to access the relationship between ease of learning the statistical software program SAS and a student's currently level of SAS proficiency.The results of the survey are published in Jackson et al. ,2011,in the International Mathematical Forum journal and are shown below. Table 1.Two-way table for ease of learning SAS and SAS proficiency level. What is the first contribution to the ² statistic for the significance test to test for a relationship between ease of learning SAS and SAS proficiency based on the location of cell A?

• A)6
• B)11
• C)7.2
• D)None of the above

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Definitions:

Standard Errors

A measure of the statistical accuracy of an estimate, indicating how much sample statistics vary from the actual population parameter.

Center Line

In the context of control charts, it represents the average or expected value against which actual data points are compared to assess variability or trend.

Type II Error

The error that occurs when a statistical test fails to reject a false null hypothesis; also known as a false negative.

Statistical Process Control

A method used in manufacturing and business processes to ensure that processes operate at their full potential.