The mass of a whiffle ball varies, usually between 40 and 50 grams. You decide to gather a random sample of whiffle balls and record the mass of each. Your data is displayed in the table below. (Units are grams.)
Checksum: 409.5
You would like to describe the variability in whiffle ball mass from your sample. You decide to make several calculations describing the "spread" of the data set.
Find the following:
a) range
b) IQR
c) sample variance
d) sample standard deviation
e) Interpret the standard deviation in this context.
| 45.2 | 44.1 | 46.8 | 40.7 | 51.5 | 44.8 | 45.2 | 47.1 | 44.1 |
You would like to describe the variability in whiffle ball mass from your sample. You decide to make several calculations describing the "spread" of the data set.
Find the following:
a) range
b) IQR
c) sample variance
d) sample standard deviation
e) Interpret the standard deviation in this context.