Statistics Review Quiz 1

Match the following

• Collecting data from the population

• Census

• A small chunk of the population

• Statistical question

• It has a variety of possible answers

• Population

• Method of collecting data from a sample

• Survey

• The entire group you want to gather data

• Sample

Match the following

• The one that occurs most often

• Mode

• The average of the data set

• Mean

• The middle number of the data set

• Measures of center

• A measurement to find the center

• Median

Match the following

• Data separated into 4 equal parts

• Range

• The range of the middle 50% of the data

• IQR

• A # much larger/smaller then the rest

• Quartiles

• Largest # minus smallest #

• Measure of variation

• A measurement to find the spread of data

• Outlier

Match the following

• Average distance a # is from the mean

• Mean Absolute Deviation

• An assumption made about a population

• Biased sampling

• Intention influencing of a survey

• Parameter

Organize these options into the right categories

Groups:

(a) Biased Samples

,

(b) Unbiased Samples

• Surveying one advisory class per team

• Only asking my friends

• Surveying every 5th person who walks by

• Putting everyones name in a hat and drawing 5 names

• Asking for volunteers

• Grading only the top 3 tests

Find the mean of the following data set; 3, 5, 7 , 9 , 12 and 9

What is the range of the following data set;

12, 9, 3, 18, 15, 16, 12, 9

What is the Mode of the following data set; 13, 12, 12, 10, 9, 9, 8, 8, 12

Dr. Doom is a dentist. He needs to report on the average number of cavities that his patients have.
1,0,1,5,6,3,4

• 3.33
• 2.85
• 3
• 3.5

Find quartile 1 of the following data set;

1, 1, 2, 3, 4, 5, 6, 7, 8