By Ferrar W.L.
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Additional info for Algebra: a textbook of determinants, matrices, and algebraic forms
CHAP. 3] DESCRIPTIVE MEASURES 49 RANGE, VARIANCE, AND STANDARD DEVIATION FOR UNGROUPED DATA The range for a data set is equal to the maximum value in the data set minus the minimum value in the data set. It is clear that the range is reflective of the spread in the data set since the difference between the largest and the smallest value is directly related to the spread in the data. 8. The range for Jon is 99 – 75 = 24 and the range for Jack is 90 – 80 = 10. The spread in Jon’s scores, as measured by range, is over twice the spread in Jack’s scores.
5 for a bar graph of this type. Primary sites for cancer for residents of Dalton county 30 Frequency 25 20 15 10 5 0 Digestive system Respiratory Breast Genitals Urinary tract Other Site Fig. 2-1 PIE CHART A pie chart is also used to graphically display qualitative data. To construct a pie chart, a circle is divided into portions that represent the relative frequencies or percentages belonging to different categories. 3, construct a table that gives angle sizes for each category. 3. The 360º in a circle are divided into portions that are proportional to the category sizes.
Replace Fig 2-15. 0 500 550 600 650 700 750 Grams Fig. 30. Ans. 21 by 100 to obtain 0%, 12%, 44%, 80%, 88%, and 100%. SPSS is used to construct the graph shown in Fig. 2-16. 0 Grams Fig. 2-16 SPSS cumulative percent plot for milk production CHAP. 23 The mathematical competency scores of 30 junior high students participating in an educational study are as follows: 30 28 38 35 29 34 28 30 40 44 30 37 33 40 23 22 30 26 40 34 30 38 37 45 37 38 29 36 40 40 Construct a stem-and-leaf display for these data.
Algebra: a textbook of determinants, matrices, and algebraic forms by Ferrar W.L.