單因素方差分析及卡方分析

1、捕食記為1,未捕食記為0,以下為兩 組對比蜘蛛捕食登記表：觀測樣本（30份）第一組第二組111210311411501611710811910101111001210131114001511160017101801191020112110221123002401251126012711281129113010Z X2218第一組第二組合計捕食數(shù)O = 2211O12 = 18R = 401未捕食數(shù)O21 = 8O22 = 12R = 202合計C廣30C2 = 30T = 60H 0:迷宮漏斗蛛的捕食情況與樣本組的選取無關(guān)HA :捕食情況與樣本組的選取有關(guān) 取顯著水平a = 0.05 聯(lián)表中各

2、項的理論次數(shù)：E - R1C -冬2011 T 60日RC40 x30E = t 2 = 60- 20曰RC20 x 30 we = t 1 =-60-10曰RC20 x 30 wE 22 1022 T 60df = (r - 1)(c -1) = (2 -1)(2 -1) = 1v (I O - EI -0.5)2(| 22 - 201 -0.5)2 (118 - 201 -0.5)2X2 =乙=+C2020+ (I8 -101 -0.5)2 * (I12 -101 -0.5)21010=0.675X 急=3.84X 2 0.675 v X 2C0.05P 0.05所以接受H0，從捕食表中看

3、出，捕食的蜘蛛比不捕食的多，而且由于接受H0，故結(jié)果不 受樣本的選取影響，說明設(shè)置障礙物后，蜘蛛依然可以靠嗅覺捕食。在試驗過程中，通過對 蜘蛛停留區(qū)域的記錄，發(fā)現(xiàn)和蜘蛛捕食情況一樣，故設(shè)置障礙物后蜘蛛還是能依靠嗅覺向獵 物靠進。視覺屏蔽和視覺未屏蔽為處理間，k=2組處理，每組處理 皆含有30個觀測值捕食記為1,未捕食記為0,以下為蜘蛛捕食登記表：觀測樣本（30份）視覺屏蔽視覺未屏蔽合計1002113114115006017118109111011111112111301141015111600171118011911201021012211231124012511260127112811291

4、03011Z工2)23（氣）44( T )n303060 x0.70.771.47z X 2212344H :b 2=b 20teH :b 2Ub 2Ate取顯著水平a = 0.05k = 2, n = 30T 2442C =32.27kn 2x 30SSt =Z x2-C = 44-32.27 = 11.73SS = -Z T -C = 30 x (212 + 232)-32.27 = 0.63ss = sst-SS = 11.73 - 0.63 = 11.1 dfT = nk -1 = 60 -1 = 59df = k 1 = 2 1 = 1 tdf = k (n 1) = 2 x 29 = 58 ess0.631 df=0.63ss11.1e df 58=0.19S20.63 g3.320.19F0.05(1,30)=4.17F0.01(1,30)756變異來源dfssS 2F處理間10.630.633.32處理內(nèi)5811.10.19總變異5911.730.82F 0.05說明處理間差異