Because Statistical Software Plays Such an Important Role in Modern

question 68

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 column proportion,E,for students who find SAS somewhat easy to learn and who are somewhat proficient in SAS?

• A)15/2
• B)33/11
• C)17/112
• D)None of the above

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Definitions:

Nonpolar

Describes molecules that do not have a separation of electric charge, leading to a lack of electric poles and evenly distributed electrical charges.

Lewis Structures

Diagrams that show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule, illustrating the valence electron arrangements.

Nitric Acid

A highly corrosive and toxic strong acid with the formula HNO3, used in the production of fertilizers, explosives, and in various nitration processes.

Formal Charges

The assignment of a charge to an atom within a molecule based on the assumption that electrons in chemical bonds are evenly distributed amongst atoms.