Measures of Variation/Samples
Double Points! City Lake Waterpark has many attractions, one of which is the Super Slide. Are the people who ride the Super Slide the population or a sample of City Lake Waterpark? Explain.
Sample; They are a subset of all the people at City Lake
What is the 1st quartile in the data set 14, 16, 18, 24, 19, 15, 13?
14
Double Points! How many of Snow White’s seven dwarfs have names ending in the letter Y?
Five: Dopey, Grumpy, Sneezy, Sleepy, Happy
Double Points! What are the 5 values that are graphed on a box and whisker plot?
Minimum, 1st Q, Median, 3rd Q, and Maximum
Can you determine the mean from a box-and-whisker plot?
No
What is the range in the data set 29, 27, 24, 28, 30, 51, 28?
27
Double Points! What is the 3rd quartile in the data set 14, 16, 18, 24, 19, 15, 13?
19
What color eyes do most humans have?
Brown!
Where is the box drawn on a box-and-whisker plot?
Around the 1st and 3rd quartiles.
Double Points! Can you determine the median from a box-and-whisker plot?
Yes
Mr. Condon's science class is studying the rainfall on the first day of each month for one year. Explain why studying the rainfall on the first day of March, April, and May is not a random sample.
The rainfall may be different in different months. These are three consecutive months and the sample should be spread out across the whole year and include more than three months.
What is the 2nd quartile in the data set 14, 16, 18, 24, 19, 15, 13?
16
What was the first state? (Think 13 colonies)
Delaware!
What extends from each quartile to the extreme data points that are not outliers.
Whiskers
Explain what the lower quartile is.
The median of the lower half of a set of data, represented by the 1st Q.
What is the median in the data set 132, 116, 108, 113, 126, 120, 131, 112, 126?
120
Random! How many red stripes are there on the American flag?
7!
Which country did bagels originate from?
*Think Europe
Poland!
What 5 values would you use to construct a box-and-whisker plot for the data set 4, 7, 5, 3, 9, 6, 4?
Minimum - Q1- Median - Q 3 - Maximum
Find the values!
Minimum = 3
1st Q = 4
Median = 5
3rd Q = 7
Maximum = 9
Explain what the upper quartile is.
The median of the upper half of a set of data, represented by the 3rd Q.
What is the mean in the data set 132, 116, 108, 113, 126, 120, 131, 112, 126
120.4
Random! What is the name of the group of men who elect a Pope?
College of Cardinals!
What was the first Disney animated film based on the life of a real person?
Pocahontas
Random! Which Disney film features the song ‘When You Wish Upon a Star’?
Pinocchio!
Random question! Which US state has the longest cave system in the world?
Kentucky!
Mammoth Cave National Park - more than 400 miles explored