Question

please do questions 2-4

for number 2 your looking for the mean, median and modal

2. According to the American Manufacturer's Association, very few shoppers actual use manufacturer's cents-off coupons. The total value of coupons redeemed by 12 people observed shopping at a local supermarket was as follows: 40c 65c $1.05 45c 25c 65c 35c 30c 30s 70c 85c 45c Calculate the mean, median, and modal redemption value of the coupons. Which is more useful to a manufacturer? As an incentive to attract additional customers, one Caribbean hotel recently installed 3. a toll-free 800 phone number. During the first three weeks of its operation, the hotel received the following number of requests for additional information on a daily basis: 24 26 29 29 27 30 25 28 18 31 27 I 21 22 2020 22 32 28 22 20 29 Find the lower quartile for the data. Find the upper quartile for the data. Find the interquartile range. Draw the box-and-whisker diagram for the data. The IQ of 50 students in the fifth grade of a special school was measured. The results 4. are as follows: Frequency IO score 71-79 80- 88 2 S 10 89-97 98-106 107-115 12 8: 116-124 4 125-133 Compute the sample variance and sample standard deviation. Focus 1047 words Resume2019 Practice Quest....doc MAT 150 Revi....doc 16 MacBook Pro x, x A DA Styles Sty Par 2 According to the American Manufacturer's Association, very few shoppers actually use manufacturer's cents-off coupons. The total value of coupons redeemed by 12 people observed shopping at a local supermarket was as follows: 40c 65c $1.05 45c 25c 65c 35c 30c 30c 70c 85c 45c Calculate the mean, median, and modal redemption value of the coupons. Which is more useful to a manufacturer? As an incentive to attract additional customers, one Caribbean hotel recently installed a toll-free 800 phone number. During the first three weeks of its operation, the hotel received the following number of requests for additional inforrmation on a daily basis: 3. 24 26 29 29 27 30 25 28 18 31 27 21 22 20 20 22 32 28 22 20 29 Find the lower quartile for the data. Find the upper quartile for the data. Find the interquartile range. Draw the box-and-whisker diagram for the data. The IQ of 50 students in the fifth grade of a special school was measured. The results are as follows 4. Frequency 2 8 IO score 71 79 80 88 89-97 10 12 98 106 107-115 116-124 125 133 6 4 Compute the sample variance and sample standard deviation. 98 Focus 1047 words Resume2019. docx Practice Quest....doc MAT 150 Revi....doc 15 MacBook Pro F6 FS F4

Answer 1

2.

(i)

Mean ($\bar{x}$) is got as follows:

12 640 53.33 12 12

So,

Mean = 53.33

(ii)

n =12

Arranging numbers in ascending order, we get:

25,30,30,35,40,45,45,65,65,70,85,105

Median = (12+1)/2th item = Average of 6th & 7th items= (45+45)/2 = 45

So,

Median = 45

(iii)

Mode = 30, 45 and 65

since 30, 45 and 65 occur maximum number of times

(iv)

Since the data set does not have outliers,mean is more useful to the manufacturer.