The Average Score of 100 Students Taking a Statistics Final

question 13

Multiple Choice

The average score of 100 students taking a statistics final was 70,with a standard deviation of 7. Assuming a normal distribution,what is the probability that a student scored 90 or higher?

• A)0.4979
• B)0.0021
• C)0.9979
• D)2.86

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Definitions:

Data Mining

The process of discovering patterns, anomalies, and correlations within large data sets to predict outcomes, using a variety of techniques including machine learning, statistics, and database systems.

Analytics

The systematic computational analysis of data or statistics.

Aggregating

The process of combining multiple pieces of data together to form a summary or a whole.

Counting Commands

The act of tallying or enumerating specific instructions given to a computer or device to perform operations.