Weds HW (Due Friday)

Vote for a math shirt--check out the poll/image on the right--nevermind. Due to technical difficulties we will do this in class tomorrow.

• There is a school wide vote to narrow down the design for an EHHS math shirt; these shirts will be dry-fit, uniform approved shirts that can be worn any day of the week!
• They will cost $15 for a short sleeve, $20 for long sleeve
• All shirts will be black and gold (not the colors in the picture)

Homework due Friday -- please complete the following in your textbook:

Page 91: 5, 7, 17, 27de, 29cd, 35abc, 37de

• For any question that asks what measure of center/spread you should use then consider the shape--and when you explain your reasoning, the explanation is short--simply something like, "We'd use the median/IQR because the distribution of ____ is skewed left/right."
• For #5 you're not calculating anything--your job is to determine what would happen to each summary statistics--would they increase, decrease, or stay the same? Why?
• Assume the boss' salary is the maximum (thanks for pointing that out Tahlea)
• For 7cd and 17 consider the "appropriate summary statistics" info we discussed today in class!
• For 27de consider today's notes about spread!
• I know we've looked at 29ab before--revisit this question and try to be more specific, use specific stats vocab (you don't necessarily have to write anything, but think about this!)
• For 29cd--back to "appropriate summary stats"-- and the "why" is simply referencing the shape of the distribution!.
• For 37d you need to use the 5 number summary to try to decide if this is skewed or symmetric (we can't figure out the modality from this info)--consider our notes on describing the shape of a boxplot!
• For 37e be sure to reference these summary statistics as your support when you "explain." Try to comment on percentiles with statements "___% of boys/girls had a higher reading level than ___% of boys/girls."

Extra Credit Homework: Sample Responses

• Remember, describe Shape, Outliers/Gaps, Center (median), and Spread (range), then make a "Generally..." statement commenting on the cluster
• ALWAYS WRITE EVERYTHING IN CONTEXT!
• If we do these things our answer will always be "essentially correct!"

1.) The distribution of the ratio of the number of pupils to the number of teachers for 24 states west of the Mississippi is unimodal and skewed right, with no apparent outliers. The median ratio of the # of pupils to the # of teachers is between 15 and 16. The range of the pupil to teacher ratio is approximately 10. Generally, the ratio of the # of pupils to the # of teachers for states west of the Mississippi was between 13 and 18.

2.) The distribution of the ratio of the number of pupils to the number of teachers for 26 states east of the Mississippi is unimodal and roughly symmetric, with no apparent outliers. The median ratio of pupils to teachers is roughly between 15 and 16, with a range of about 7. Generally, the ratio of the number of pupils to the number of teachers in states east of the Mississippi is between 13 and 17.

I'll leave you with this classic....

Hump Dayyyyyyyy