Question
When the time comes for a group of people eating together at a restaurant to pay their bill, sometimes they might agree to split the
When the time comes for a group of people eating together at a restaurant to pay their bill, sometimes they might agree to split the costs equally and other times will pay individually. Some researchers conducted an experiment where 40 American college students were randomly assigned to eat in groups of five (two females and three males). Before ordering, half of the groups were told they would be responsible for paying for meals individually ("Split" group) and half were told to split the cost equally among the five participants ("Not split" group). The number of items ordered (Items) and cost of each person's order (Cost) in US Dollar was recorded. Choose the correct display of the data and its description.
"Split" group
Items | 3 | 4 | 3 | 2 | 5 | 4 | 3 | 4 | 6 | 2 | 3 | 6 | 5 | 7 | 4 | 5 | 6 | 4 | 2 | 3 |
Cost | 40 | 38 | 42 | 28 | 48 | 33 | 29 | 35 | 59 | 20 | 31 | 55 | 38 | 68 | 43 | 51 | 41 | 30 | 25 | 34 |
"Not split" group
Items | 5 | 6 | 8 | 7 | 4 | 5 | 6 | 5 | 6 | 6 | 7 | 4 | 3 | 7 | 6 | 5 | 5 | 4 | 6 | 5 |
Cost | 51 | 51 | 51 | 51 | 51 | 48 | 48 | 48 | 48 | 48 | 53 | 53 | 53 | 53 | 53 | 46 | 46 | 46 | 46 | 46 |
The mean of the Not split boxplot is larger than the mean of the Split boxplot.
The Not split boxplot is skewed to the left, the Split boxplot is approximately symmetric.
The median of the Not split boxplot is less than the median of the Split graph.
The IQR of the Not split boxplot is less than the IQR of the Split boxplot.
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