Chapter 3. Chapter 3 Average and Median
Pre-Test Question:
Math and Graphing Review
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You must read each slide, and complete any questions on the slide, in sequence.
Question
yaTjO1A2eLDYSA4sKPSkPUD0r1DuKVuQe4JmgHKpgvcUveNTgZhhQ1iioFFnD0LP9Tjac+kdcokf2fcRhK3aoBYoHJr9qAM+prFMOezOuSXuZ29zP/YHCt7h6uG2vIKNIsaEVmGqWtB+HLt+AV4HdL/J1HB/ChXbtEd9wPXs1ItldOKMdYO6QPB0dauYxC9NruZkn6KyRVL60M6XlcICIiCuxbOpSwG6Y8wK+9jq7MUZ4xm0AgFBbU0PDjV3790N0glaRovHpGAC76qttcKGTOO7oSk=Correct! The average is 9.2 and the median is 9.
Sorry,the average is 9.2 and the median is 9. To calculate the average we add all the numbers together: 4 + 10 + 8 + 9 + 15 = 46 and then divide by the number of items we have (five): 46/5 = 9.2. To calculate the median, we arrange the numbers from lowest to highest and find the middle-most value, in this case, 9.
Video
Post-Test Questions:
Question 3.1
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! The average cost of their dinners is $31.
Sorry,the average cost of their dinners is $38. To calculate the average we add up the cost of each meal: 27 + 38 + 28 = 93. We then divide this total cost by three (the number of people) and get 93/3 = $31.
Question 3.2
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Correct! The average is 9 and the median is 6.
Sorry, the average is 9 and the median is 6. To calculate the average we add all the numbers together: 3 + 6 + 18 = 27. Then we divide by the number of items we have (three): 27/3 = 9. To calculate the median we arrange the numbers from lowest to highest and find the middle-most value, in this case 6.
Question 3.3
sU619hLm5Tcj/PpJkWhP1+qtxVXIedVHGbtuBsR5qTLjt/Rw5JFc0gNkEwPFL/aHFqNBcHqUdWrK2Hkti//dIbwZnJNd7yzz1LJEwuZLBe79CgjPsGjNG4bptVYd7MFU4MqVXZ/DiVaVRqD3URxCivYvx7M0+9ZcSGWWrm5HbsBWnyqV+7pyy6grAXz5Lm+/o6FTZSefaddC0H789IH97KLRvThE90bHqW047NHcdrvMCdUUgqJFN5boQgFBF6u1Ft8IGs0g1a4ClA6uNTfHF4oe5CvpHd9fEm6wNq4bf9KiHlP7UKtFhEJNJDk7E/OHA8JAi+oovLSj5Vm8ISayJxW4x/MNSj7da51BkNbCOB4=Correct! The median price is $7.00.
Sorry, the median price is $7.00. With an even number of elements we calculate the median by taking the average of the two middle-most values:(6.00+8.00)/2=$7.00.
Question 3.4
x4wIUyXW/HFM6Oq9p+k0B58OgyOQxVCBlk0zgHSLTbar2Pyo9y7lyk71pJxa3z/teLm+909fsBmTFcXph0me9KS2twm1mKNy8yXjUdx5rJNZLT/o59ZzCcD4tZ9iU6mW99whwlgV0AX2Wwui+lUodUwA0AItEWqFh86JOPT9ny/V4lZ+b5EyygldSDbzIbNhjUNNMpLjBCeosG9RV7iweh3KaVk6D9BggxT/IR3x88Apm+bm7Un15CaCq6iSMMe5g384tQ==Correct! The average is 9 and the median is 8.
Sorry, the average is 9 and the median is 8. To calculate the average we add all the numbers together: 18 + 1 + 5 + 6 + 12 + 13 + 8 = 63 and then divide by the number of items we have (seven): 63/7 = 9. To calculate the median we arrange the numbers from lowest to highest and find the middle-most value, in this case 8.
Question 3.5
JaNqYckHN2ARaPCvVSyBnY62w6DfvSy/Ef3XNHZj9Uhze1w2gShg4HyRlHqMIYFNGUxD5LY1HaRbTyPR+ftWfSHdzr+dPfqJEsCoIt5TKT4L6Hoe5Y8ExGHDFuSk/O7+G0U6M4nVvC7C8st18NFF763H9P8GGYQQSN+0/VHq4o9dySmNYvQCroWpKbXzeacGu+xJKsvO7Nl75J+BECg62XzaGeW0h0uUucSEwps3GT2yA8R/NQ3/2cudjaxfbTvWXFptkOaQzqQ7ugHh9kXtUCCi3UkKdyHxV3xSamg+6JGQcK6S1cwL6CVKBzoZBVWOoDtSso2Tr5MUyDDnNf8+wg==Correct! The average price paid is $82.50.
Sorry, the average price paid is $82.50. To calculate the average price paid we first calculate the total paid: 5 × 100 + 3 × 75 + 2 ×50 = $825. We then divide the total amount paid by the number of people (10): $825/10 = $82.50.