The following 11 scores were input in the gradebook for Prof. Williams's class. \[ 73,74,75,83,85,86,88,91,92,92,195 \] Identify all values that are outliers. If there is more than one outlier, separate them with commas. If there are no outliers, click on "None".
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To identify outliers in the dataset, we use the Interquartile Range (IQR). First, we need to find the first (Q1) and third quartiles (Q3). 1. Sort the data: \( 73, 74, 75, 83, 85, 86, 88, 91, 92, 92, 195 \) 2. Find Q1 (the median of the first half): \( Q1 = 83 \) 3. Find Q3 (the median of the second half): \( Q3 = 92 \) 4. Calculate IQR: \( IQR = Q3 - Q1 = 92 - 83 = 9 \) Now, we determine the lower and upper bounds: - Lower bound: \( Q1 - 1.5 \times IQR = 83 - 13.5 = 69.5 \) - Upper bound: \( Q3 + 1.5 \times IQR = 92 + 13.5 = 105.5 \) Any score below 69.5 or above 105.5 is an outlier. In this dataset, \( 195 \) is the only score that falls outside this range. So, the outlier is: **195**.
