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A student measured her pulse several times a day over 26 days.
A data frame with 104 observations on the following 3 variables.
Pulse
Pulse rate (beats per minute)
Time
Time of day (evening, morning, noon, one)
evening
morning
noon
one
Day
Day1 to Day26
Day1
Day26
A student measured her pulse in the morning, at noon, at 1:00, and in the evening for each of 26 days.