 Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum  MENU          Solutions for Session 4, Part D

See solutions for Problems: D1 | D2 | D3    Problem D1 Since the median and quartiles require separating the data into halves that are larger or smaller than a central value, it is necessary to order the data. If the data are unordered, it is much more difficult to find the value that splits the list into two equal groups.   Problem D2 To create a box plot, first create a Five-Number Summary for each data set: a. For Brand A, here is the Five-Number Summary: Min = 23 Q1 = 27 Med = 29.5 Q3 = 32 Max = 39 Here is the box plot: b. For Brand B, here is the Five-Number Summary: Min = 17 Q1 = 25 Med = 26 Q3 = 29 Max = 30 Here is the box plot:    Problem D3 Placing the box plots side by side clearly shows that a large number of Brand A boxes have more raisins than Brand B boxes. The interquartile range is a little wider for Brand A, and the top 25% of Brand A boxes are all higher than Brand B's maximum. This suggests strongly that Brand A, on average, has more raisins in a typical box than Brand B.      © Annenberg Foundation 2017. All rights reserved. Legal Policy