Statistical or Not?
Which question is a statistical question?
A. How old is Marcus?
B. How many pets do students in our class have?
C. What is your favorite color?
B. How many pets do students in our class have?
Which set contains only numerical data?
A. red, blue, green
B. 4, 7, 9, 12
C. soccer, basketball, baseball
A class records the number of minutes students read each night:
20, 15, 30, 25, 20
How many pieces of numerical data were collected?
A stem-and-leaf plot has:
4 | 2
What number does this represent?
Answer: 42
Four students recorded the number of books they read:
2, 4, 3, 5
What is the mean number of books?
Answer: 3.5 books
Clue:
Find the mode:
3, 5, 5, 6, 7
5
Is this a statistical question?
"How many minutes do students in our class spend reading each night?"
Yes. The answers will vary from student to student.
A class records the number of minutes students read each night:
20, 15, 30, 25, 20
How many pieces of numerical data were collected?
Answer: 5
A line plot has 4 X's above 6.
What does this mean?
Answer: Four data values are 6.
A data set has these values:
5, 7, 7, 8, 13
What are the median and mode?
Answer: Median = 7; Mode = 7
Find the median:
4, 6, 7, 9, 12
Answer: 7
Which question would produce numerical data that could be displayed in a line plot?
A. What is your favorite sport?
B. How many siblings does each student have?
C. What is your favorite book?
B. How many siblings does each student have?
A student records these scores:
82, 95, 76, 88, 91
What is the greatest value in the data set?
Answer: 95
What is the greatest value?
Answer: 42
Two students recorded how many push-ups they could do.
Student A: 8, 10, 12, 10
Student B: 7, 9, 11, 13
Which student has the greater mean?
Answer: Neither. They have the same mean.
Find the range:
8, 12, 15, 19, 21
Answer: 13
Which question is NOT a statistical question?
A. How many hours do 5th graders sleep each night?
B. What are the heights of students in our class?
C. How tall is Jordan?
Answer: C. How tall is Jordan?
The data set is:
12, 15, 18, 12, 20, 15, 12
How many times does the value 12 appear?
Answer: 3 times
How many values are represented?
Answer: 9
A class records the number of points scored in five games:
12, 15, 15, 18, 20
A new game is added with a score of 30.
Which measure will definitely change?
A. Mode
B. Median
C. Range
Answer: C. Range
Clue:
Find the mean:
6, 8, 10, 12
Answer: 9
Mia wants to collect data for a line plot. Which two questions would work?
A. How many books did each student read last month?
B. What is each student's favorite book?
C. How many minutes does each student spend doing homework?
D. What is each student's favorite subject?
A and C
A teacher records the number of books read by six students:
3, 7, 5, 3, 8, 4
What is the difference between the greatest and least values?
Answer: 5
A line plot represents the number of laps students ran:
How many students ran at least 4 laps?
Answer: 5 students
A student says:
"The mean of 5, 7, 8, 10, and 15 is 8."
Is the student correct? Explain.
Answer: No.
The sum is:
5 + 7 + 8 + 10 + 15 = 45
45 รท 5 = 9
The mean is 9.
The data set is:
4, 6, 6, 8, 11
Find the mean, median, mode, and range.
Answer: