Displaying and comparing data

Advanced Math 6 · Unit 13 · data-distributions-6

data-distributions-6

Name ______________________________Date ______________

1.
Which of these is a statistical question?
1. (A)
  How old am I?
2. (B)
  How tall is the principal?
3. (C)
  How many hours of sleep do sixth graders at our school get on a school night?
4. (D)
  What is $7 \times 8$ ?
2.
Find the median of $3,\ 7,\ 8,\ 12,\ 15,\ 20,\ 21$ .
Answer: ______________
3.
Find the interquartile range (IQR) of $3,\ 7,\ 8,\ 12,\ 15,\ 20,\ 21,\ 25$ .
Answer: ______________
4.
Five students' scores on a quiz were $2,\ 3,\ 3,\ 4,\ 40$ . Which is the better description of a typical score, and why?
1. (A)
  The mean, $10.4$ , because it uses every value
2. (B)
  The median, $3$ , because the $40$ pulls the mean far from where most scores are
3. (C)
  The range, $38$ , because it shows how different the scores are
4. (D)
  The mean, $10.4$ , because it is larger
5.
Find the mean absolute deviation (MAD) of $4,\ 8,\ 5,\ 7,\ 6$ .
Answer: ______________