Final answer:
To find the mean, median, mode, range, variance, and standard deviation of the numbers 7, 11, 11, 15, 20, 20, 28, you need to calculate each measure with specific formulas. The mean reflects average, median is the middle value, mode is the most frequent number, range shows the interval between the smallest and largest number, and variance/standard deviation measure the spread of the numbers.
Step-by-step explanation:
Finding Mean, Median, Mode, Range, Variance, and Standard Deviation
To address the student's question, let's calculate the mean, median, mode, range, variance, and standard deviation for the given set of numbers: 7, 11, 11, 15, 20, 20, 28.
Doing these calculations, you will obtain the variance and the standard deviation. Remember, the mean can be affected by outliers and may reflect skewing in the distribution.