
39Confidence Intervals to Assess Variation in Fat Content
15.50
15.25
15.00
14.75
14.50
Data
Interval Plot of C3, C4, C5, C6, C7, C8, C9, C10, C11, C12
95% CI for the Mean
FIGURE 3.27
Interval plot without reference line.
FIGURE 3.28
Process to show reference line.