上機(jī)操作練習(xí)三after topic12作業(yè)

1、學(xué)生上機(jī)操作練習(xí)三(After topic 12)1. S.260-S.8.12. S329-S.10.25 (a) (b)3已知 19811998 年我汽車產(chǎn)量數(shù)據(jù)如下表。分別計(jì)算三年移動平均和指數(shù)平滑趨勢值(平滑系數(shù)為 0.4)4. 某工廠各季節(jié)產(chǎn)品的銷售情況如下表所示（萬元）yearspringsummerautumnwer2000184396339141200121243841015619811998 年我國汽車產(chǎn)量數(shù)據(jù)年份產(chǎn)量(萬輛)年份產(chǎn)量(萬輛)19811982198319841985198619871988198917.5619.6323.9831.6443.7236.9847

2、.1864.4758.3519901991199219931994199519961997199851.4071.42106.67129.85136.69145.27147.52158.25163.00試求各季的季節(jié)指數(shù)，并2005 年各季銷售量5某化工企業(yè)為研究溫度與催化劑對某種化工產(chǎn)品得率(產(chǎn)出與投入比)的影響，在其他條件不變的情況下，選擇了 4 種溫度 3 種催化劑進(jìn)行組合試驗(yàn)，結(jié)果如下。請問：(1) 溫度對產(chǎn)品得率是否有顯著影響(=0.05)(2) 催化劑對產(chǎn)品得率是否有顯著影響(=0.05)(3) 溫度和催化劑不同組合的搭配對產(chǎn)品得率是否有顯著影響(=0.05)對上述三個(gè)檢驗(yàn)給出 p

3、 值和結(jié)論.6A Sydney-based company producakes, which it sells to stores both New South Wales. The company hasa line of wrapped he city and country recorded these sales December 1998 andelow. The companyfor each of the 12 quarters betnSeptember 2001, as shownhe tab溫度催化劑B1B2B3A1(60 度)666168737570A2(70 度)85

4、8196985361A3(80 度)949781795966A4(90 度)857981769488200222650946718420032555235101852004269566509212is keen to produce a mcake sales for eacht will enable it to predict itsing quarter.1). After the seasonal effects have been removedarch 2000 of the time series isthe value(a) 3570(b) 4152(c) 3561(d) 34

5、842). Exponential-smoothing value in June 2001 of number ofcakes sold is (resistant coefficient 0.90)(a) 44563). The 12(b) 3026(c) 2846(d) 4130quarters of data were labelled (1,2,.,12) andcalled the x-variable. The y-variable was number of cakessold. Least squares linear regreswas used to find theeq

6、uation of the trend line of y. The trend value in December2001 of y is(a) 4123(b) 4701(c) 5012(d) 64587 Considerthefollowingsetofpaireddataforthevariables x and yy352037244241401719213951442823576033quarternumber of cakes soldDecember 19981874March 19992142June 19992605September 19992767December 199

7、92924March 20003270June 20004020September 20004764December 20004137March 20014016June 20013886September 200137701） the correlation coefficient of X and Y is(a) 0.75(b) -0.91(c) -0.86(d) 0.782） the least-squares regres(a) Y=71.05-2.34*X(c) Y=65.36+1.36*Xline of X and Y is (b) Y=63.92-1.20*X(d) Y=80.21-0.85*X、3）the adjusted coefficient of determination for the line is(a) 0.83(b) 0.77(c) 0.69value of y is(d) 0.944）when x is 36 the regres(a) 16(b) 19(c) 21(d) 258比較 3 種化肥(A、B 兩種新型化肥和傳統(tǒng)化肥)在三種類型(酸性、中性和堿性)的土地上對作物的產(chǎn)量情況有無差別，將每塊土地分成 6 塊小區(qū)，施用 A、B兩種新型化肥和傳統(tǒng)化肥。收割后，測量各組作物的產(chǎn)量如下表。化肥、土地類型及其它們的交互作用對作物產(chǎn)量有影響嗎？(