Maggie attends Happy Days preschool. The preschool assessed the children’s motor skills (i.e. the ability to tie their shoes), social skills (i.e. sharing and saying please) and school readiness (i.e. knowledge of ABC’s & basic counting ability). The motor skills test has a class mean of 9.50 with a standard deviation of 1.25. The social skills test has a class mean of 10.25 with a standard deviation of 1.10. The school readiness test has a class mean of 11.43 with a standard deviation of 1.30. For each test higher score means better performance of that skill. Maggie’s parents are given a report card that indicate Maggie’s Z scores on each test which are motor skills = -0.72, social skills = 1.21 & school readiness = 0.00. 22. For which skill was the class average lowest? 23. For which skill was the class variability highest? 24. For which skill was the class variability lowest?
Maggie attends Happy Days preschool. The preschool assessed the children’s motor skills (i.e. the ability to tie their shoes), social skills (i.e. sharing and saying please) and school readiness (i.e. knowledge of ABC’s & basic counting ability). The motor skills test has a class mean of 9.50 with a standard deviation of 1.25. The social skills test has a class mean of 10.25 with a standard deviation of 1.10. The school readiness test has a class mean of 11.43 with a standard deviation of 1.30. For each test higher score means better performance of that skill. Maggie’s parents are given a report card that indicate Maggie’s Z scores on each test which are motor skills = -0.72, social skills = 1.21 & school readiness = 0.00.
22. For which skill was the class average lowest?
23. For which skill was the class variability highest?
24. For which skill was the class variability lowest?
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