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tion. The difference between Figures 5.2 and 5.3 is that specific groups, variables, and coefficients are provided in Figure 5.3. The boxes are labeled in the diagram, the variables are defmed in Table 5.8, and the arrows show how information is directed to Equation 5.24. The variables in the terms of the equation were assigned values in such a way that a larger number in- dicated a greater level of the variable or combination of variables as defined in Table 5.8. This means that a positive sign indicates a direct relationship with the dependent variable and vice-versa. In particular, all the acceptance functions (Terms # 6 through # II) were deliberately constructed so that a higher value would mean greater acceptability of a project propos- al.23 This required defining all the variables in the acceptance functions in such a way that a higher value meaning greater acceptability would be Irue of eacli ofthese variables also. Single variable terms All the terms of Equation 5.24 are positively re- lated to public supporl for the flood control plan (the 23In the case of the cost acceptance function, this turn- ed out to be a mistake because of the effect of IF Statement C5. dependenl variable) except for Terms I and 3. Term I "Number of types of groups with whom they dis- cussed flooding problems, II may be negative because of opposition of some groups to a proposal for stream channelization. Owners of homes along the streams organized and vehemently protested the destruction of the aesthetic aspects of the streams in their back- yards. In general, people were sympathetic to the im- portance of aesthetics and to the streamside owners' viewpoints, and the proposal was revoked. This could explain an inverse relationship for this variable in this application of the basic equation. The negative sign of Term 3, "Proporlion of Single Unit Structures in a City Block," is harder to interpret. "Length of Time Uved in the Area," while not used in this equation, was also negatively related to the evaluation of flood control proposals. Perhaps a person in a situation for a longer time becomes used to and therefore less concerned about dangers in his environment, particularly if these threats do not oc- cur frequently as in the case of serious floods. Since persons who own their own homes are more likely to live in single dwellings than are those who do not, and a person who lives in an area longer is more likely to become a homeowner, this effect may cause the nega- tive sign for variable X3. Additionally, a homeowner pays property taxes and Iherefore may be more aware of the cost of government projects. Table 5.8. Categories of independent terms for Equation 5.28. z' C N Z C N Z C N Z C N 1.1 0 136 4.1 6-8 26 7.1 -22-10 16 10.1 -36-25 18 1.2 I 47 4.2 9-11 109 1.3 2 34 4.3 12-14 116 7.2 -9--1 20 10.2 -24-18 32 1.4 3 33 4.4 15-17 24 1.5 4 25 7.3 0 170 10.3 -17-11 88 7.4 1-9 41 5.1 0 28 7.5 10-24 28 10.4 -10-1 89 2.1 0 164 5.2 1 63 2.2 I 42 5.3 2 73 10.5 0 33 2.3 2 35 5.4 3 60 10.6 1-32 15 2.4 3 34 5.5 4,5 51 8.1 -45- 11 -15- -32--25 3.1 0-.39 15 6.1 -50-21 8.2 19 11.1 43 7 8.3 0 136 -21--1 3.2 .40-.59 31 6.2 -20-1 14 8.4 1-13 23 11.2 42 8.5 14-19 70 11.3 O- n 3.3 .60-.79 52 6.3 0 19 8.6 21-49 16 11.9 6.4 I-IS 61 11.4 12-21.9 47 3.4 .80-.89 52 6.5 16-30 146 6.6 31-50 28 9.1 -46-16 13 11.5 22-37.8 51 3.5 .90-.99 62 9.2 -15-1 20 3.6 1.0 83 9.3 0 105 9.4 1-22 114 9.5 23-40 23 az refers to the subscript of Zm Equation 5.28. The first number identifies the term defmed in Table 5.7. The number to the right of the decimal point indicates a range of vahJ.es. The C column specifies the values each range contains. N is the number of observed values in a range. For example 15 values of Term 3 range between 0.00 and 0.39. The total num~ ber of observed values is 275. 74