(a) construct an un-grouped frequency distribution and relative frequency distribution for the heights.
Answer: The un-grouped frequency distribution and relative frequency distribution for the heights is given below:
Heights (Inches) Frequency Relative Frequency
64 2 [tex]\frac{2}{18} =0.111[/tex]
65 4 [tex]\frac{4}{18} =0.222[/tex]
66 3 [tex]\frac{3}{18} =0.167[/tex]
67 3 [tex]\frac{3}{18} =0.167[/tex]
68 2 [tex]\frac{2}{18} =0.111[/tex]
69 2 [tex]\frac{2}{18} =0.111[/tex]
71 2 [tex]\frac{2}{18} =0.111[/tex]
