Page 116 - Demo

76 Chapter 1 %u2022 Analyzing One-Variable Data 4. Type the data values separated by spaces or commas, or copy-and-paste them from a file. 5. Click the Begin analysis button to display a dotplot of the data and the summary statistics. Summary Statisticsn mean SD min Q1 med Q3 max 20 17 16.9302 2 5 11.5 22.5 70 TI-83/84 1. Type the data values into list L1 . 2. Press STAT , arrow over to the CALC menu, and choose 1%u2013Var Stats.d OS 2.55 or later: In the dialog box, press 2nd 1(L1) and ENTER to specify L1 as the List. Leave FreqList blank. Arrow down to Calculate and press ENTER . d Older OS: Press 2nd 1 (L1) and ENTER . 3. Press %u25b2 to see the rest of the one-variable statistics. FIRST PASSStarnesSPA5e_01_un115_01152 - May 4, 2024 YO U R TU R N LE SSO N 1.7 Why are there so few chips in the bag? In Your Turn Lesson 1.6, we asked, %u201cHave you ever noticed that bags of chips seem to contain lots of air and not enough chips?%u201d Here again are the data on the percentage of air in each of 14 popular brands of chips, along with a dotplot: 90 Brand Percent air Brand Percent air Cape Cod 46 Popchips 45 Cheetos 59 Pringles 28 Doritos 48 Ruffles 50 Fritos 19 Stacy%u2019s Pita Chips 50 Kettle Brand 47 Sun Chips 41 Lays 41 Terra 49 Lays Baked 39 Tostitos Scoops 34 0 10 20 30Percent air40 50 60 1. Find the range of the distribution. 2. Calculate and interpret the standard deviation. 3. Find the interquartile range. Interpret this value. 4. The dotplot suggests that the bag of Fritos chips, with only 19% air, is a possible outlier. Recalculate the range, standard deviation, and interquartile range for the other 13 bags of chips. Compare these values with the ones you obtained in Questions 1 through 3. Explain why each result makes sense. keepphotos/Stockimo/Alamy%u00a9 Bedford, Freeman & Worth Publishers. For review purposes only. Do not distribute.