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by BlastRoom
Decide when a data set is best summarized by the median and IQR and when the mean and MAD fit better.
#measure_selection#us_grade_6_math
20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
A team scored 22, 24, 25, 27 and 92 points in five games. The mean is 38 and the median is 25. Which measure best describes a typical score?
Daily high temperatures were 18, 19, 20, 20, 21 and 22 degrees C. The mean and the median are both 20, and no value is unusual. Which summary fits best?
Nine salaries at a company have a median of $40,000 and a mean of $95,000. What does this large gap most likely show?
In a data set with one value far above all the others, the median describes a typical value better than the mean does.
Students read for 20, 22, 23, 24, 25, 26 and 28 minutes. The mean and the median are both 24. Which measure of center best describes the data?
A data set is 4, 5, 5, 6 and 40. The mean is 12 and the median is 5. Which value better represents a typical measurement, and why?
A data set is strongly skewed by one very large value, so its center is reported with the median. Which measure of spread should be reported alongside it?
Five test scores are 78, 80, 81, 82 and 84. The mean is 81 and the median is 81. Which summary best describes this data set?
Five bus trips took 2, 45, 47, 48 and 50 minutes. The mean is 38.4 minutes and the median is 47 minutes. Which measure best describes a typical trip?
The mean is the best measure of center for every data set, no matter what shape the data have.
Ages at a party are 5, 6, 7, 8, 9, 10 and 74 years. The mean is 17 and the median is 8. Which measure best describes a typical age at the party?
Prices at a stall are $3, $4, $4, $5, $5, $6 and $60. Which measure of spread is least affected by the $60 price?
A survey of house sizes is strongly skewed, with a few houses far larger than the rest. Which report best describes the data?
A dot plot of 12 shoe sizes is mound-shaped and even on both sides of size 7, with no gaps and no unusual values. Which measure of center is best?
Donations were $5, $5, $10, $10, $10, $15 and $1,000. The mean is about $151 and the median is $10. Which measure reports a typical donation?
The data 12, 14, 15, 16 and 88 have a mean of 29 and a median of 15. If the 88 is replaced by 200, which measure still equals 15?
Quiz scores are 15, 16, 16, 17 and 18. The mean is 16.4 and the median is 16. What do these close values suggest?
Why is the IQR the measure of spread reported with the median for skewed data?
Why is the MAD the measure of spread reported with the mean?
Daily steps were 8,000, 8,200, 8,400, 8,500, 8,600, 8,800 and 9,000. The mean and median are both 8,500 and no day is unusual. Which summary fits?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Reading Histograms
20 questions
