Grade 7 Statistic

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

What is the range of the dot plot?

• 9
• 5
• 4
• 6

How many more people 19 and under are in the French club than the Spanish club?

• 1
• 3
• 2
• 4

What is the mean of the following list of numbers?

9, 9, 14, 7, 12, 8, 11, 19, 15, 11

• 9

• 10

• 11.5

• 12.5

What is the median of the following list of numbers?

9, 9, 14, 7, 12, 8, 11, 19, 15, 11

• 9

• 11

• 10

• 12

What is the mode in the set of data?
2,2,2,4,4,5,6,6,6,7

• 2
• 6
• 2 and 6
• 2,4, and 6

What is the median of the data?

• 200
• 100
• 90
• 140

What is the interquartile range?

• 4
• 6
• 2
• 8

What data value is the upper quartile (Q3)?

• 64
• 62
• 66
• 58

What is the interquartile range (IQR) of the data set?

• 20
• 25
• 5
• 10