September 28, 2017
B) Between 1990 and 2000, the violence crime rate reached its highest peak. There was a gradual increase of crime rates from 1960 to 1990; and following 1990 the crime rate drastically dropped.
E) The data in the box plot appears to be skewed to the left, the same way it appears in the time series plot.
V O I D
B) A systolic blood pressure score below 60 appears to be an outlier. The mean of systolic blood pressure is centered around 140 units. More people have a systolic blood pressure score below 140 than above 140.
D) The data is skewed to the left.
V O I D
F) Approximately 50% of men fall into the Pre-High Blood Pressure group. The first quartile is at 120.75 units and the the third quartile is at 141.00 units; and the proportion of the data within that range is 50%. Therefore, the approximate proportion of men in the High Blood Pressure group would be about 25%.