Suppose We Have a Data Set of the Number of Car

question 35

Multiple Choice

Suppose we have a data set of the number of car accidents per day in Los Angeles during the year 2013. The data was input into a spreadsheet manually by an assistant at the Department of Transportation. For one day in June 2013, he input that there were 1230 car accidents; but there were actually only 123 that day. How will this error affect the measures of center for this data?

• A)The mean and the median will be higher than they should be.
• B)The mean and the median will not be affected by this error.
• C)The mean will be higher than it should be, but the median will not be affected.
• D)The median will be higher than it should be, but the mean will not be affected.

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Definitions:

Test Statistic

A statistic calculated from sample data that is used in a hypothesis test to decide whether to reject the null hypothesis.

Sample Proportion

The ratio of members within a sample that possess a particular trait or characteristic, relative to the total sample size.

Null Hypothesis

The hypothesis that predicts no interaction or association between variables, serving as the benchmark for statistical testing.

Null Hypothesis

The hypothesis that there is no effect or no difference, and any observed deviation from this is due to sampling or experimental error.