Macmillan Learning A study of a new type of vision screening test recruited a sample of 175 children age three to seven years

Question

Macmillan Learning A study of a new type of vision screening test recruited a sample of 175 children age three to seven years The publication provides the summary of the children s ages Twelve patients 7 were three years old 33 19 four years old 29 17 five years old 69 39 six years old and 32 18 seven years old 1 Click to download the data in your preferred format Excel Minitab14 18 Minitab18 JMP SPSS TI R Mac TXT PC TXT CSV Crunchlt IT Yamada et al A new computer based pediatric vision screening test Journal of AAPOS 19 2015 pp 157 162 doi 10 1016 j jaapos 2015 01 011 What is the mean age in the study You will need to either organize the data in a way that your technology will accept or do the computations by hand If so be sure to multiply each age by the number of children with that age in the numerator of the formula for the mean Enter your answer rounded to one decimal place

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