Brittany surveyed the students in three different Chemistry classes regarding the average number of hours of sleep they get each night. She calculated the mean and standard deviation, SD, of the data and recorded the results in the table below.
Class A
Mean = 7.35
SD = 2.92
Class B
Mean = 6.87
SD = 3.65
Class C
Mean = 8.14
SD = 3.10
Use the information provided to complete the following statement.
Class (A, B, C) shows the most consistency in the number of hours slept per night because the (standard deviation, mean) is the (highest, lowest).
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