study design - The school board administered a math test to all students in grade 6 at High Achievers Charter School and determined that 15% of them were below grade level in math. Based on this data, which of the following conclusions are valid? 15% of all students at HACS are below grade level in math. 15% of all students in grade 6 at HACS are below grade level in math. Based on this data, which of the following conclusions are valid?

The school board administered a math test to all students in grade 6 at High Achievers Charter School and determined that 15% of them were below grade level in math. Based on this data, which of the following conclusions are valid? 15% of all students at HACS are below grade level in math. 15% of all students in grade 6 at HACS are below grade level in math. Based on this data, which of the following conclusions are valid?

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Anonymous

Sangeetha Pulapaka (last edited 2 years ago) (Expert, Educator @Qalaxia)

All students in the grade 6 at HACS were tested, so we can make the valid conclusion that 15% of all students in grade 6 at HACS are below grade level in math.

However, we don't know about all students at HACS. We can't draw conclusions about this population.

The valid conclusion:

15%of all students in grade 6 at HACS are below grade level in math.