The WISC-IV is a standardised instrument for measuring IQ in children. The population M = 100 and SD = 15. If a child scores 120 on the WISC then what is the Z score? %3D %3D O a. 1.5 O b. -1.33 0.5 O d. 1.33

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The WISC-IV is a standardised instrument for measuring IQ in children. The population
M = 100 and SD = 15. If a child scores 120 on the WISC then what is the Z score?
%3D
%3D
O a. 1.5
O b. -1.33
Oc.
0.5
O d. 1.33
Transcribed Image Text:The WISC-IV is a standardised instrument for measuring IQ in children. The population M = 100 and SD = 15. If a child scores 120 on the WISC then what is the Z score? %3D %3D O a. 1.5 O b. -1.33 Oc. 0.5 O d. 1.33
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