Question

can you please explain how you got the answers

1. Consider the following frequency table representing the distribution of hours students watch TV in a week. Week Hours Students Match Class Frequency 12- 19 20- 27 28-35 36- 43 44- 51 110 Step 1. Enter the lower class limit for the first class. Step 2. Enter the upper class limit for the second class. 19 2. Consider the following frequency table representing the distribution of cost of lunch in dollars). Cost of fumch the Pillars! Class Frequency 7.0- 7.7 13 7.8- 8.5 13 8.6- 9.3 12 9.4- 10. 1 6 10.2- 10.9 11 Enter the class width of each class. 3. Consider the following frequency table representing the distribution of hours students spend on homework in a week. men lonewock Frequency Hours Students Class 13- 23 [24 34 35-45 146- 56 (57-67 13 15 15 14 Step 1. Enter the midpoint for the fourth class. Step 2. Enter the midpoint for the third class.

Answer 1

Answer 1- Lawer clas Upper cíay iimit Hours Students Watch TV en a weaklimit Class Frequoney 19 12-19 २7 20-27 35 28 28 - 35 36 -43 43 36 44-51 51 10 Enter the lower calass limit for the first elass. Step1- Angwer Lower class limit:- The least value that class. Can belong to is thelower class limit fer Hhe first cless. 12 Hence Step 2- Enter the upper class limit for the seconol class. Auswer Leoer eless limit;- The largest value thot can class. belong to a 27 is the upper class lemit for seLond class· 3. Hence Answez2 Cost of Lunch Lóndallers) | Wodth of class = UCL- LCL 7.7-7.0 2017 7.0-7.7 8.5-7-8= 0.7 7.8-8.5 9.3-8.6=017 8.6-9.3 10.1-9.4=07 9.4-10.1 10.2-L0.9 lo19-10.2=D0.7 formila of wilth of class = Opper clss limit- louer class limit.

Qefinaction Clas width - The difference bethween the upper or lower clas limit of consecutive class All cass Sholld have the Lame class width. Anáne23- Upper limis Fitcequeney Lower limits midpont Class 18 13 13-23 29 34 13 24-34 40 45 35 15 35-45 51 56 46 15 46-56 62 67 57 51-67 Lehinabion of class Micpoint:- The midle value of each data To finol the class midpoint, averuge class. the Lepper and lower clas limits. clars midpoint cm) = epper +lower Enter the mid point for Hhe fourth claes . upper + lower StepI- 4th class midpoivt 2. 46+56 51 %3D StepI- Entor the midpoint fer tue third class. 80 3hd class midfoint 35+45 %3D 8.