To find the mode of the dataset, we need to identify the value that appears most frequently. The dataset is:
{$10.45, $10.45, $35.80, $38.10, $40.90, $45.90, $79.60, $96.78}
In this dataset, the value $10.45 appears twice, while all the other values appear only once. Therefore, the mode is $10.45.
Now let's analyze whether this mode is descriptive of the dataset. The mode is $10.45, which is the most common value. However, it is also the lowest value in the dataset, which may not fully represent the overall range of tips Yasmine earns.
Therefore, while the mode does indicate a common tip amount, it may not be a good indicator of Yasmine's typical earnings because it doesn't account for the higher values present in the dataset.
The correct response is: The mode of the dataset is $10.45. The mode is descriptive of the dataset because it is the most common value.