Disk drives have been getting larger
Their capacity is now often given in terabytes (TB) where 1 TB = 1000 giga- bytes, or about a trillion bytes. A survey of prices for external disk drives found the following data:
|
Capacity (in TB)
|
Price (in $)
|
|
.080
|
29.95
|
|
.120
|
35.00
|
|
.200
|
299.00
|
|
.250
|
49.95
|
|
.320
|
69.95
|
|
1.0
|
99.00
|
|
2.0
|
205.00
|
|
4.0
|
449.00
|
a) Prepare a scatterplot of Price against Capacity.
b) What can you say about the direction of the association?
c) What can you say about the form of the relationship?
d) What can you say about the strength of the relationship?
e) Does the scatterplot show any outliers?