1st Semester Final Exam Study Guide AC

The line plot shows Duane’s recent golf scores. Duane predicts that his next score will be 109. Is the prediction reasonable?

• A. No, the range of his most recent scores is 101 to 105.

• B. No, the median of his most recent scores is 107.

• C. Yes, the mean of his recent scores is 100.

• D. Yes, the range of his most recent scores is 101 to 113.

Mark made a line plot of his most recent bowling scores. Mark predicts that over the next 3 games, his average score will be 123. Is the prediction reasonable?

• A. Yes, because the mean of his recent scores is 123.

• B. No, because the mean of his recent scores is 130.

• C. No, because the median of his recent scores is 125.

• D. Yes, because the range of his recent scores is 110 to 150.

Use the data below to answer the following question(s). Nuncio manages a local restaurant. He collected information about the worker round-trip commute times in a frequency table and displayed the data in a histogram. Which of these describes the data?

• Exactly 50% of the workers have a round-trip commute of 20 minutes or less.

• More than 25% of the workers have a round-trip commute over 50 minutes.

• One-fourth of the workers have 41–50 minute round-trip commutes.

• There are 4 workers who have a 20 minute round-trip commute.

The following data are test scores for a class of 20 students: 98, 96, 83, 91, 88, 77, 58, 75, 62, 80, 100, 87, 93, 91, 64, 91, 85, 90, 76, 92. Complete the table.

Using the table in #4, In which interval does the mode lie?

Using the table in #4, In which interval does the median lie?

Susie was shopping for a computer. If she eliminates the highest price, how does that affect the measures of central tendency of the data?

• It increases the mean.

• It decreases the median.

• It changes the mode.

• It has no effect on the measures of central tendency.

Which of the following sets of data is represented on the box-and-whiskers plot?

• 8, 11, 12, 12, 12, 15, 16, 17, 18, 24

• 8, 12, 13, 15, 16, 17, 19, 20, 21, 24

• 8, 11, 12, 12, 15, 16, 17, 20, 21, 22, 24

• 8, 10, 12, 12, 13, 15, 16, 16, 18, 24

What is the inter-quartile range for the set of data?

• 5

• 9

• 14

• 55

Given this data: Which statement can you conclude from the box-and-whisker plot?

• The median of the data is 36.

• The lower extreme of the data is 29.

• The upper extreme of the data is 40.

• The interquartile range makes up 100% of the data.