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Mat 152-83 online SP 2019 Margaret Gardner | 1/29/19 9:31 PM Homework: Section 3.3 Score: 0 of 1 pt 3.3.1-T Save 43 of 9 (2 complete)> HW Score: 22.22%, 2 of 9 pts Question Help Recently, a random sample of 13-18 year olds was asked, How much do you currently have in savings? The data in the table represent the responses to the survey Approximate the mean and standard deviation amount of savings EEB Click the icon to view the frequency distribution for the amount of savings The sample mean amount of savings is $ 235 (Round to the nearest dollar as needed.) The sample standard deviation is S (Round to the nearest dollar as needed.) Frequency distribution of amount of savings Savings Frequency 338 87 $0-$199 $200-$399 $400-$599 $600-$799 $800-$999 1000-$1199 1200-$1399 20 Enter vour answer in the answer box Print Done All parts showing Check Answer

Trying to find the SD of this, looking at other answers I need a (x-mean) column and I'm not sure where to get those numbers from?

2 Midpoints(X) Frequency(f) Freq*X (X-mean) (X-mean]) f*X-mean)2

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x- x) 99.5 19.5 3 38 x-x) 3631.o 136.0 18 501.4 6253,%12 63.8 4093.4 356,/29.28 งเ398 69, 685.44 3832699,2- 7 b0565 99.5 2 0 99. 5 899,5 099,5 299.5 do 139900 463.9% /5,2741 4,305546 8 593.0 663. 190869 y 6172,17a.1L 6597.0 863.98 74661 4,768.4y 3599.0 1063,98 1,133,0534% 9,2 641D689 skr-XS-27,6629|1.68 Sample mea 122,939 235.52 것 Σ 522 27, 669,911.68 an coo 522-1 sf- 30,43

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