Refer to the worksheet named SALES. This worksheet provides customer account numbers and sales data for these customers. [Note: Provide numerical answers to 2-digits to the right of the decimal unless otherwise directed]. 5. For the current year, what is the mean sales amount? 6. Comparing the current year to the prior year, by what percent has total sales for the year increased? (For example, if current sales were $102 and prior sales were $100, then sales would have increased 2%)... if your answer is the decimal equivalent, show 4- digits to the right of the decimal. 7. What is the standard deviation of sales for the current year? In this case, assume that you are using the current year data as a sample representing a larger population of similar accounts. 8. Column D is based on a formula, but that formula has been removed, and only the resulting values are currently visible. What formula would you enter in cell D3 to generate the % change, in a manner that could be copied and pasted into D4:D27? Assume column "D" is formatted as a percentage (%) (Note: Where there is no prior- year sales, the percent change should be shown as 100% by your formula). 15 A B D E 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Account Number 28371 10526 98254 25942 58721 33321 46551 12684 85126 33256 97754 32561 44115 32586 15498 88874 48857 63257 44589 32598 12563 74251 65324 85216 42165 Current YR Previous YR Sales Sales $ 688,842 $ 750,402 $ 407,920 $ 448,866 $ 386,582 $ 102,820 $ 319,472 $ $ 331,582 $ 214,596 $ 323,754 $ 362,132 131,840 $ 3,657 $ 116,668 $ 15,417 120,071 $ 70,278 $ 101,618 $ 90,282 93,753 $ 58,302 $ 92,989 $ $ 66,740 $ 72,366 $ 61,699 $ 46,323 $ 38,567 $ $ 36,104 $ 4,594 36,354 $ 282,155 $ 30,528 $ 22,618 $ 30,947 $ 13,301 $ 28,372 $ 27,272 $ 28,165 $ 6,969 $ 30,474 $ 23,203 $ 27,018 $ 34,389 $ 28,627 $ $ 21,671 $ % Change -8.2% -9.1% 276.0% 100.0% 54.5% -10.6% 3505.1% 656.7% 70.9% 12.6% 60.8% 100.0% -7.8% 33.2% 100.0% 685.9% -87.1% 35.0% 132.7% 4.0% 304.1% 31.3% -21.4% 100.0% 100.0% 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 +