Solution for hw1
p22 #28
a. A value of 0 represents that the spare tire is inflated to the manufacturer-recommended
pressure.
A negative value represents that the spare tire is over-inflated.
b.
From the graph, we could see that most of the spare tires are under-inflated.
c.
d.
p24#34
frequencies and relative frequencies
histogram
p30#44
a.
A representative value could be the mode, 19.20 or 19.60.
b. the median is 19.20 and the mean is 19.26, which are consistent with 1.
p41#59
p41#63
a. q1=149.5, q3 = 1175, iqr = 1025.5
b. outlier > q3+1.5iqr = 2713.25; extreme outlier > q3 + 3iqr = 4251.5
c.
The boxplot shows a positively skewed award distribution, with a median award of $750 thousand
and no apparently outliers.