Statistical Questions
Is this a statistical question?
How many students are wearing Jordan's in this class?
No.
Khalil's grades are listed below:
ELA 75
Math 70
Social Studies 75
Science 80
What is the mean of his grades?
75
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
To Find the mean you have to subtract and multiply
False; to find the mean you have to add and divide
Define mean
average of a data set or shared equal value
Should a statistical question have a single answer?
No, a statistical question should have multiple answers that vary
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
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
Statistical questions are questions that can only generate 1 answer
False; statistical questions are ones that have variability (more than one answer)
Define Median
the center or middle value of a data set
Is this a statistical question?
How many chicken tenders did each person in the class eat this weekend?
Yes
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
What is the median? 47, 37, 49, 25, 12, 13, 57
37
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
Define statistical question
a question that anticipates variability in responses
Is this a statistical question:
Does the watson family watch tv?
no.
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
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
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
Define Quotient
the answer to a division problem
Is this statistical?
What is the average weight of 11th grade students in America?
No
What is the average grade for a student who's grades are: 13, 29, 69, 69, 23, 97.
50
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
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.
Define Outlier
a number that varies greatly from the data set