Statistical Questions

Mean

Median

True or False

Vocabulary

100

Is this a statistical question?

How many students are wearing Jordan's in this class?

No.

100

Khalil's grades are listed below:

ELA 75

Math 70

Social Studies 75

Science 80

What is the mean of his grades?

75

100

Grades for the Unit 1 Common Assessment are listed below:

88, 99, 100, 75, 53, 88, 90

What is the median of the grades listed above?

88

100

To Find the mean you have to subtract and multiply

False; to find the mean you have to add and divide

100

Define mean

average of a data set or shared equal value

200

Should a statistical question have a single answer?

No, a statistical question should have multiple answers that vary

200

Carter misses the bus every day, he was trying to figure out how many minutes to leave to get to the bus on time. He asked his friends how many minutes early they arrive at their bus stop,

Here's what they said:

4, 6, 10, 7, 5, 5, 6, 5

What is the average time Carter's friends get to the bus?

6 minutes

200

10 students were sked how many ice cream scoops they prefer, here are the responses:

1, 3, 4, 2, 1, 1, 2, 2, 1, 2

What is the median number of ice cream scoops?

2

200

Statistical questions are questions that can only generate 1 answer

False; statistical questions are ones that have variability (more than one answer)

200

Define Median

the center or middle value of a data set

300

Is this a statistical question?

How many chicken tenders did each person in the class eat this weekend?

Yes

300

Ms. Rose asked her students how many times did they get ice cream last week. Their response are below:

5, 0, 0 ,5, 4, 2, 0, 1, 2, 1

What is the mean?

2

300

What is the median? 47, 37, 49, 25, 12, 13, 57

37

300

Students were asked how many chicken nuggets they can eat at one time, their responses are recorded below.

6, 10, 9, 18, 7, 9, 6, 5, 21

The median is 9

True; 5,6,6,7,__9__,9,10,18,21

300

Define statistical question

a question that anticipates variability in responses

400

Is this a statistical question:

Does the watson family watch tv?

no.

400

Students were asked how many pencils they had in their bookbag. The responses are below:

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

What's the mean?

4

400

During dismissal students were trying to figure out when their bus would come pick them up. Yesterday Taylor waited 30 minutes, Lailia waited 45 minutes, Thomas waited 15 minutes, while Kayla and Crystal waited 20 minutes. What is the median wait time of all the students?

20

400

Desiree asked each person in her 6th grade math class; What grade are you in?

That is an example of a statistical question.

False; because she asked her 6th grade math class, everyone will have the same answer

400

Define Quotient

the answer to a division problem

500

Is this statistical?

What is the average weight of 11th grade students in America?

No

500

What is the average grade for a student who's grades are: 13, 29, 69, 69, 23, 97.

50

500

Students were polled and asked instead of 180, how many days should the school year last?

Here are their response:

100, 89, 46, 78, 72, 45, 99, 100, 30

What is the median?

78

500

Teachers at JMS were asked what grade they teach.

6, 7, 7, 7, 7, 7, 7, 8, 6, 7, 6, 6, 8 ,8

According to this list, 8th grade has the most teachers.

False; 7th grade has the most teachers.

500

Define Outlier

a number that varies greatly from the data set