Probability & Statistics Review

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

The choir director in a high school wants to know how the students in the school feel about singing. If the director selects 100 girls and 100 boys to complete a survey, which method will result in a biased sample?

• The students will be selected from the choir
• The students will be selected randomly throughout the school
• The students will be selected on Wednesday afternoon before the choir concert
• The choir director will select five students from each of the forty homerooms in the school

Marcos wants to find out how many students at his school like to go to the movies. Which survey method is likely to produce a representative survey?

• Ask the boys in the boys locker room.
• Ask the 25 students in his homeroom class.
• Ask students coming out of a movie theater.
• Ask half of the 34 students on the soccer team.

The entire pool; the total set of people/objects that can be studied

• population
• sample
• datum
• probability

Another word for average is

• sample 
• mean
• data
• numerical data

What information can you get from this graph?

• Mean, Median, Mode, Range
• Mean, Median
• Median, 1st Quartile, 3rd Quartile, Range
• 1st Quartile, 3rd Quartile

What is the mode of the data?

• 1 book
• 9 books
• 3 books
• 0 books

What is the mean of test scores?
{70, 70, 80, 85, 85, 90, 95, 95, 100, 100}

• 87
• 85, 95, and 100
• 30
• 85 and 90

What was the highest score on the math test?

• 53
• 79
• 97
• 90

In the last 5 games, Kevin Durant scored 22, 22, 18, 12, and 21 points. What is Durant's Mean (Average) score per game?

•  19 points per game
• 95 points per game
• 18.6 points per game
• 22 points per game