Exercise:
We obtained serum blood sugar levels (mg/dl) in 50 subjects of a certain group as shown in a table on the left. Make a histogram.
Comparative Verification Test
The Sturges’s formula is commonly used to determine the appropriate number of bins. If the sample size is 50, then 1+LOG(50)/LOG(2) = 6.64, which means that the number of bins should be 6 or 7, just like EZR and StatFinale. SPSS automatically sets the bin width to 5 for practical purposes, so we tried creating the same histgram in StatFinale by changing the settings to upper limit = 112+2, lower limit = 64-2, and bin width = 5.
Reports of SPSS & EZR
※Click pics to enlarge.
