Idiot\'s Guides Basic Math and Pre-Algebra

Chapter 19: Graphs 269 How to Read It When you begin to read a circle graph, the first thing you want to know is what the graph ...

270 Part 4: The State of the World Enrollment in Arts Courses Painting 10% Art History 20% Ceramics 10% Chorus 22% Band 16% Musi ...

Chapter 19: Graphs 271 Day 12 34 5 6 7 8 9 10 Time 22.71 22.68 22.50 22.43 22.37 22.19 22.04 21.97 21.91 21.89 The horizontal sc ...

272 Part 4: The State of the World How to Read It Line graphs should have a title to tell you what information is being presente ...

Chapter 19: Graphs 273 CHECK POINT Draw a line graph to represent the data below. Esther’s Spending on Restaurant Meals for th ...

274 Part 4: The State of the World Which autumn month had sales most similar to the number of hot dogs sold in February? The L ...

CHAPTER 20 Measures of Center and Spread In This Chapter Identifying mean, median, and mode Using percentiles and quartiles Mea ...

276 Part 4: The State of the World The Centers One of the ways you can represent a data set is by identifying a central tendency ...

Chapter 20: Measures of Center and Spread 277 Here’s an example with a larger data set and larger numbers. Calculate carefully t ...

278 Part 4: The State of the World DEFINITION The median of a set of data is the middle value when the data are ordered from sma ...

Chapter 20: Measures of Center and Spread 279 CHECK POINT Find the median of each set of data. A = {2, 2, 2, 3, 3, 4, 4, 4, 4} ...

280 Part 4: The State of the World more than one mode. Sometimes that’s interesting information, but often it just means that th ...

Chapter 20: Measures of Center and Spread 281 The Separators For small sets of data, you can take in the whole of the data set a ...

282 Part 4: The State of the World Suppose you had collected the data below and wanted to find the quartiles. Number of books re ...

Chapter 20: Measures of Center and Spread 283 CHECK POINT In questions 16–18, find the first quartile, median, and third quartil ...

284 Part 4: The State of the World Interquartile Range The interquartile range, or IQR, is similar to the range, as you can tell ...

Chapter 20: Measures of Center and Spread 285 Calculators and computers often do the work of finding a standard deviation, espec ...

286 Part 4: The State of the World CHECK POINT Find the range of {34, 54, 78, 92, 101} Find the range of {3, 4, 5, 4, 7, 8, 9, ...

PA RT 5 Extra Practice Your journey through the world of numbers is coming to a close. I hope it was a good trip for you. Was it ...

CHAPTER 21 Extra Practice ........................................................................... Part I: Arithmetic ....... ...