Data Unit

Here are the quiz scores for randomly selected students in two seventh-grade classes.
Based on the samples, which class generally has higher quiz scores?

• Class A

• Class B

Which mean absolute deviation would be more consistent? 4.2 or 8.5?

• 4.2

• 8.5

Find the MAD of the following data sets: $29, $58, $15, $129, $75, $22

• 196

• 54.7

• 114

• 32.67

Describe the histogram:

• Left Skewed

• Symmetrical

• Right Skewed

• Asymetrical

At a middle school, the 7th graders will conduct a survey for where to go on a field trip. Which method will result in the least biased decision?

• to randomly ask 8th grade students who went on a field trip last year

• to randomly choose some 7th grade students to select a location

• to ask all 7th grade teachers and administrators for a location

• to ask the student council to choose a location

Why do we use double box and dot plots?

• To make people confused

• to make data seem misleading

• to save space on paper

• to compare populations

The Table above shows the points scored by the JV basketball team in their first seven games. Calculate the mean, median, mode and range. Which statistical measure makes the team sound the best?

• Mean

• Median

• Mode

• Range

Josh surveyed every 5th person who walked into the cafeteria. Is this a systematic random sample

• No

• Yes

Find the mean.
90, 100, 95, 85, 60, 80

• 85

• 84

• 86

• 90

Choose the correct data set for this box and whisker plot

• 2, 11.5, 23.5

• 2, 7.5, 8, 11.5, 12, 14.5, 23.5

• 7.5, 11.5, 14.5

• 11.5, 3.2, 1.1, 8.90