Data Analysis

A set of observations that constitute PART of the population.

• Statistic
• Census
• Population
• Sample

Which survey method does the following use:

Interview every 10th student who enters the school in the morning.

• random

• voluntary response

• systematic

• convenience

Which survey method does the following use:

Assign each car in a dealership a number and then use a random-number table to select the cars to be inspected.

• systematic

• random sample

• convenience

• Self - selected (volunteer)

Which survey method does the following use:

Marianne wanted to know students' opinion on the new schedule at school. She survey's the first 30 students who come into her class.

• Convenience Sampling

• Systematic Random Sampling

• Simple Random Sampling

• Volunteer response

Which survey method does the following use:

Disneyland often surveys its guests as they exit a restaurant during their visit. The surveyor stands at the restaurant exit, counts the number of people leaving, and surveys every 25th guest. This is a form of:

• no

• Random Sample

• Voluntary Response
• Systematic Sampling

Determine if the following study is biased.

Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• A. Biased

• B. Unbiased

Calculate the mean.

10, 4, 5, 9

• 7

• 5

• 8

• 4

What is another word for AVERAGE?

• Mode

• Median

• Mean

• Not nice

To find the average of a set of numbers, add up all the items and divide by...

• 2
• The minimum
• The maximum
• The number of items

What is the median?

• biggest- smallest
• average
• the middle #
• # that happens the most