1. What data are shown in the frequency distribution and why might it be of interest? Include the size of the classes, noting if they are of a consistent size or not. Also include a conclusion that could be made from the frequency distribution.
2. How else might these data have been displayed? Discuss pros and cons of 2 other presentation options, such as tables or different graphical displays.

Table 2. Blood Pressure and risk for all cause mortality during first 2 years of follow up int he second national health and nutrition examination survey mortality study

Blood pressure, mmHg Deaths, n Relative risk (95% Cl) P value

Systolic 0.03

<120 21 1.00

120-129 18 0.63 (0.33-1.20)

130-139 19 0.65 (0.34-1.23)

140-149 20 0.67 (0.35-1.29)

150-159 17 0.79 (0.39-1.59)

>,= 160 27 1.06 (0.56-2.00)

Diastolic >0.2

<80 46 1.00

80-84 28 1.27 (0.78-2.04)

85-89 21 1.21 (0.71-2.07)

90-94 7 0.73 (0.32-1.64)

95-99 9 1.29 (0.62-2.71)

>,= 100 11 1.82 (0.88-3.76)