## Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Find the highest and lowest values. $H=123$ $L=77$ Find the range. $R=H-L=123-77=46$ Find the class width by dividing the range my the number of classes. $W=\frac{R}{C}=\frac{46}{7}=6.57$ Round up to the nearest whole number. $W=7$ Add the width to the lowest value to get the lower limit of the next class. Start with 0 since the lowest value is 0.8. ind the upper limit of each class by subtracting 1 from the lower limit of the next class. $77+7=84$ $84+7=91$ $91+7=98$ $98+7=105$ $105+7=112$ $112+7=119$ $119+7=126$ Tally the frequency for each category and enter the results in the table.