Math 1 · Unit 12 · Lesson 4 · part 4 of 4
Practice Problems
Try them, get help one step at a time, then print how it went.
Practice: try it, then get help one step at a time
Build fences, name outliers, and predict what a new value does to each statistic. Hint gives a nudge, Show next step shows one worked step at a time, Reveal answer checks, and Hide help / start over clears the card.
My results
Finished the practice? Print a page that shows each question, what you typed or chose, the correct answer, and how it went. Good for showing a teacher or keeping in a folder.
Exit ticket
On paper or an index card. Use the math word and the plain-English word.
- Q1 = 6.5 and Q3 = 18. Find the fences. Is 88 an outlier?
- A 74 inch player joins a team with median 67 and IQR 3. What happens to the median and IQR? To the mean and standard deviation?
- Which statistics resist outliers, and why?
- Should you delete an outlier? What do you ask first?
Check your exit ticket
- IQR 11.5; fences −10.75 and 35.25. Yes, 88 is past 35.25.
- The median and IQR stay the same; the mean and standard deviation go up.
- The median and the IQR: they use only the order, not how far out a value is.
- No. Ask whether it is a mistake or a real, unusual value.