Statistics Middle School

At an assembly 7 out of 10 students who entered the gym were carrying a backpack. Based on this information, if 700 students were at the assembly, how many students could be expected to be carrying a backpack?

• 49

• 490

• 210

• 421

The Student Council asked every tenth student in the lunch line how they preferred to be contacted with school news. The results are shown in the table. Is this an unbiased sample? If yes, suppose there are 684 students at the school. How many can be expected to prefer E-mail?

• No, it's a biased sample

• 432

• 304

• 16

What is the median of the following data set:
1, 3, 4, 4, 5, 6, 7

• 1

• 4

• 5

• 7

What is the mode of the following data set:
1, 1, 1, 2, 5, 9

• 1

• 2

• 5

• 9

What is the mean of the following set of numbers: 4, 8, 12, 16, 20?

Mathematical Equivalence

ON

What is the distribution of the data?

• skewed right

• skewed left

• symmetric

• stairsteps

When MOST of the data is clustered near the LESSER values, the data is considered to be

• Skewed Right

• Skewed Left

• Skewed High

• Skewed Low

A set of data collected to answer a statistical question

• Uniform

• Distribution

• Symmetrical

• Measure of Center

Which of the following is an example of a statistical question?

• What color shirt are you wearing?

• How many dogs do you have?

• What are the favorite ice cream flavors of CMS 6th graders?

• Is it a nice day outside?

What makes a question statistical?

• Population

• Measurability

• Variability

• All of the above