SRIS Review for Final#1

What is the lower outlier boundary of this numerical distribution? 22, 14, 10, 24, 7, 16, 3, 20, 23, 18, 13 

• -8
• -2
• 4
• 10

What is the best description of the shape of this numerical distribution?   7, 3, 4, 8, 8, 6, 9, 5, 1, 0, 6, 9, 9, 8, 5, 7, 10, 9, 7, 9 

• skewed to the right
• skewed to the left
• roughly symmetrical
• upwardly mobile

Which value can be calculated from parts of the 5-number summary of a numerical distribution?

• QIV
• Mean
• UOB
• number of data values in the distribution

Which choice lists two parts of a hypothesis test?

• test statistic and p-value
• general addition rule and general multiplication rule
• response variable and explanatory variable 
• observational study and experiment

In a hypothesis test, if the p-value is lower than the significance level, what are you likely to do? 

• reject the test statistic
• reject the alternative hypothesis
• not reject the null hypothesis
• reject the null hypothesis

Which of these is the only statement that is true? 

• In a boxplot, the length of the box equals the IQR
• If numerical values are in order from smallest to largest then the mean is the middle value
• If the graph of a numerical distribution is skewed to the right, the median will be greater than the mean
• A boxplot shows the number of data values that are in the numerical distribution 

What can be described as “a controllable event that has the same probability of success as an athlete’s or team’s presumed ABILITY, and that can be repeated many times”?

• test statistic
• simulation
• significance level
• hypothesis test

Which of the following is not a type of graph of statistical data?

• histogram
• box-and-whisker plot
• dotplot
• all of the above are graphs of statistical data

A hypothesis test used a test statistic of 33.3% and a level of significance of 5%,  and it resulted in a p-value of 2.5%.  What conclusion should be drawn from this?  

• reject the null hypothesis because the level of significance is less than the test statistic 
• reject the null hypothesis because the p-value is less than the level of significance
• do not reject the null hypothesis because the test statistic is greater than the level of significance
• the test statistic was calculated wrong, it has to be negative

A baseball announcer said that the next hitter’s batting average was .308 because he was “24 out of 78”.  When calculating the batting average, what mathematical process is represented by the words “out of” ? 

• divided into
• subtracted from
• multiplied by
• divided by