Please check my responses! ASAP

Consider the following data set: 3,4,6,7,9,9,11
If 5 were added to each of the values, how would that affect the median?

My Answer: The median would change and increase.

Consider the following data set: 3,4,6,7,9,9,11
If 5 were added to each of the values, how would that affect the standard deviation?

Me: The deviation would increase

Consider the following data set: 3,4,6,7,9,9,11
If 5 were added to each of the values, how would that affect the mean?

Me: The mean would increase if 5 is ADDED to each of the numbers to the data set. assuming I'm not actually changing the amount of numbers in the set it would mean the only thing changing is the overall value of the set.

Mary measures the weights of five newly-hatched pythons in ounces. John converts Mary's measurments into grams. there are 28.35 grams in an ounce here are Mary's results: Python = 1 2 3 4 5
Mary= 1.13oz 1.02oz 1.23oz 1.06oz 1.16oz

Calculate the mean and sample standard deviation of Mary's measurements using the formula for each.

Me: Assuming I'm calculating Mary's data the standard deviation would be 0.08276 and the mean would be 1.12

1 answer

mean and median will increase by 5

std will not change. Try it. That's the whole point of the std - it is independent of the actual magnitudes, just their spread.

Your µ and σ look ok, too.