c 2x - 4y + z = -15 x + 2y - 4z = 27 5x - 6y - 2z = -3

Chapter 2 Characteristics of Data 2.1 1. Center- measures of center; a value that indicates where the middle of the data is 2. Variation- a measure of the amount that the data values vary 3. Distribution- the shape of the spread of the data over the range of values 4. Outliers- a data value that lies far away from the majority of other values EXAMPLE- Constructa groupedfrequencydistributionand cumulativefrequencydistributionwith5 classes. Test Data: 85 79 82 73 79 96 62 88 99 78 84 91 *Find the range: 99-62=37 *Find the class width: 37÷5= 7.4 (remember to round up to the nearest whole number for class widths) - class width = 8 Begin with the smallest number (62) Class