Question 20 Use the frequency distribution to determine a) the total number of o

Question

Question 20 Use the frequency distribution to determine a) the total number of observations b) the width of each class c) the midpoint of the 2nd class, and d) the modal class. O a)10 b)0 c)19 d) 44-50 o a) 25 b) 10 c) 0 d) 16-22 O a) 18 b)7 c) 19 d) 18-22 Question 21 500 people were survey and asked the question: How often do you bring home leftovers from restaurants? Every time: 7% Never: 9% Most times, 25% How O 295 0 35 O 125 0 45 many people never brought home leftovers? Question 22 Given: 1, 7, 11. 27, 36, 14, 12, 9, 1 Find the mean. O 11 O 13.1 18.5 O None of the above

Explanation / Answer

Solution: 20) Total number of observations = 3+6+1+0+3+5= 18

Width of each class = 7

Mid point of second class= (16+22)/2=19

Modal class= 16-22

Hence the correct answer is a) 18 b)7 c)19 d) 16-22

21) 9%of 500= 9/100*500=9*5=45

Hence, the answer is 45.

22) Mean =(1+7+11+27+36+14+12+9+1)/9

= 118/9 = 13.1

Hence, the correct answer is 13.1.

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