Write the step-by-step solution and explanations I will not give full credit for
ID: 3273784 • Letter: W
Question
Write the step-by-step solution and explanations I will not give full credit for incomplete work. Bill kept track of the number of hours he spent exercising each week. The results for four months are shown below Find the mean number of hours Bill spent exercising per week. 7.50 8.20 7.10 790 8.00 7.50 7.80 7.10 7.30 7.50 7.90 8.907.10 8.20 8.20 8.20 8 00 7.80 A store manager kept track of the number of newspapers sold each week over a seven-week period. the results are shown below. 95.38. 221,122.258, 237, 233 Find the mode(s) for the given sample data: 98, 25 98, 13, 25, 29, 56 98 The weights (in ounces) of 18 cookies are shown below. 0.60 1.34 0.89 0.96 0.80 1.43 1.34 1.16 0.60 1.49 1.34 1.16 1.34 1.49 0.80 1.34 0.96 0.89Explanation / Answer
Solution:-
1)
The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:
Mean = Sum of terms/Number of terms
Sum of terms = 7.50+8.20+7.10+7.90+8.00+7.50+7.80+7.10+7.30+7.50+7.90+8.90+7.10+8.20+8.20+8.20+8.00+7.80
= 140.2
Number of terms = 18
mean = 140.2/18
= 7.7889
2)
The median is the middle number in a sorted list of numbers. So, to find the median, we need to place the numbers in value order and find the middle number.
Ordering the data from least to greatest, we get:
38 95 221 233 237 258
Median = (221+233)/2 =227
3)
The mode of a set of data is the value in the set that occurs most often.
Ordering the data from least to greatest, we get:
13 25 25 29 56 98 98 98
the mode is 98 .
4) the midrange = (high + low) / 2.
= (1.49+0.6)/2
= 1.045
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