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# Feb 13 - PSYC 375 Notes Basic Concepts in Statistics and...

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Nominal scale Ordinal scale ual interval scale PSYC 375 Notes (2/13/08) Basic Concepts in Statistics and Measurement Psychological Measurement The process of assigning numbers to persons so that specific properties of those persons are faithfully represented by properties of the numbers. Murphy and Davidshofer 1998, p. 67) Properties of numbers that could be used to represent properties of persons Properties of numbers 2, 4 and 16 Properties of person A, B and C Examples 2 is different from 4; 4 is different from 16 A is different from B; B is different from C A is depressed; B is agoraphobic; C is dyslexic 16 is greater than 4; 4 is greater than 2 C exhibits more of attribute X than B; B exhibits more than A C is more depressed than B; B is more depressed than A The difference between 16 and 4 is much 010009000003 2a0200000200 a20100000000 a20100002606 0f003a03574d 464301000000 000001009d86 000000000100 000018030000 000000001803 000001000000 6c0000000000 000000000000 350000006f00 000000000000 00000000da32 0000ce180000 20454d460000 The difference between the amount of attribute X exhibited by persons C and B is much greater than the difference between the amount exhibited by parsons B and A A, B and C earned scores of 98 (2 wrong), 96 (4 wrong) and 84 (16 wrong) on a test of vocabulary

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010018030000 120000000200 000000000000 000000000000 0000c0120000 74180000cb00 000009010000 000000000000 000000000000 f8180300280b 040016000000 0c0000001800 00000a000000 100000000000 000000000000 090000001000 0000030c0000 dc0500002500 00000c000000 0e0000802500 00000c000000 0e0000801200 00000c000000 010000005200 000070010000 01000000a4fff fff0000000000 000000000000 009001000000 000000044000 22430061006c 006900620072 006900000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 000000000000 001200f0ac12 001000000054 b01200d4ad12 00a34ff16854b 012004cad120
010000000bca e120038b0120 0754ff16854b 012004cad120 0200000005fa ada6b4cad120 054b01200200 00000fffffffffc 023b01e6aada 6bffffffffffff01 80ffff0180efff 0180ffffffff00 000100000800 000008000043 000000010000 000000000058 020000250000 00632e900100 08020f050202 0204030204ef 0200a07b2000 400000000000 0000009f0000 000000000043 0061006c0069 006200720000 000000410072 00690061006c 00200052006f 0075006e0080 ad1200391bcd 6b0800000001 000000bcad12 00bcad120074 d8cb6b080000 00e4ad1200fc 023b01647600 080000000025 0000000c0000 000100000025 0000000c0000 000100000025 0000000c0000 000100000018 0000000c0000 000000000254

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000000540000 000000000000 000000350000 006f00000001 000000555587 409876874000 000000570000 00010000004c 000000040000 000000000000 000000030c00 00dc05000050 000000200057 003600000046 000000280000 001c00000047 444943020000 00fffffffffffffff f040c0000dd0 500000000000 046000000140 000000800000 047444943030 000002500000 00c0000000e0 000802500000 00c0000000e0 000800e00000 014000000000 000001000000 014000000040 000000301080 0050000000b0 200000000050 000000c02b40 071010400000 02e0118001c0 00000fb02020 001000000000 0bc020000000 001020222537 97374656d000 000000000000 0000001003f3 f3f3f3f3f3f3f0 0003f3f3f0004
Ratio scale 0000002d010000 040000002d0100 00040000000201 01001c000000fb 02f5ff000000000 00090010000000 00440002243616 c6962726900000 00000000000000 00000000000000 00000000000000 000040000002d0 10100040000002 d0101000400000 02d01010005000 00009020000000 20d000000320a0 a0000000100040 0000000007101b 40020000600040 000002d0100000 40000002d01000 0030000000000g

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