What would be the most appropriate statistical test using SPSS to examine whether there is a relationship between having an ASD diagnosis and motor skills development? Why? State the two variables and scale of measurement for each.

A developmental psychologist measured motor skills in two groups of seven-year-old children - those with a diagnosis of Autism Spectrum Disorder (ASD) and those with no diagnosis ("None"). He used the Test of Gross Motor Development (TGMD-3) to obtain an overall composite score. This composite score is calculated by summing all performance criteria and can range from 0 (complete absence of skills) to 100 (proficiency in all skills). Data are in the table below. Enter the data into SPSS to complete problems #8-10. (16 pts content / 2 pts format) Diagnosis Motor Skills None 77 None 71 None 66 None 83 None 85 None 70 None 68 ASD 71 ASD 40 ASD 10 ASD 15 ASD 23 ASD 60 ASD 70