STATISTICS 591 The following are the results from a (classic) 25 factorial design on beans. Factor S spacing of rows (18 and 24 in) M manure (0 and 10 tons/acre) N nitrochalk (0 and 50 lb/acre) P super phosphate (0 and 60 lb/acre) K potash (0 and 100 lb/acre) The response is the yield of beans. The field plan was arranged in four blocks of eight plots each and is shown below. nk (1) p npk III snp smn smnp sn IV mp spk m sk smk mnpk mnk smpk s smp n k I snk mk smnk mpk II np smnpk sp mnp mn pk sm snpk Trt Combination Response Trt Combination Response (1) 66.5 k 63.6 s 36.2 sk 39.3 m 74.8 mk 51.3 sm 54.7 smk 73.3 n 68.0 nk 71.2 sn 23.3 snk 60.5 mn 67.3 mnk 73.7 smn 70.5 smnk 92.5 p 56.7 pk 49.6 sp 29.9 spk 74.3 mp 76.7 mpk 63.6 smp 49.8 smpk 56.3 np 36.3 npk 48.0 snp 45.7 snpk 47.9 mnp 60.8 mnpk 77.0 smnp 64.6 smnpk 61.3 Carefully analyze the data.
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