Question: Scores below represent a students scores on a reading comprehension test and on a mathematical comprehension test. Researchers want to know if there is a
Scores below represent a students scores on a reading comprehension test and on a mathematical comprehension test. Researchers want to know if there is a correlation between how a student scores on reading and how they score on math. Student Reading Comprehension Score Mathematical Comprehension Score 1 250 244 2 238 277 3 287 255 4 275 290 5 230 215 6 245 222 7 248 235 8 229 290 9 223 229 10 246 233 11 279 259 We can use these data to create a regression line and make predictions. How reliable do you consider these predictions? Scores below represent a students scores on a reading comprehension test and on a mathematical comprehension test. Researchers want to know if there is a correlation between how a student scores on reading and how they score on math. Student Reading Comprehension Score Mathematical Comprehension Score 1 250 244 2 238 277 3 287 255 4 275 290 5 230 215 6 245 222 7 248 235 8 229 290 9 223 229 10 246 233 11 279 259 We can use these data to create a regression line and make predictions. How reliable do you consider these predictions? Very reliable. The calculator gave me a regression line and I trust it. Very unreliable. The correlation coefficient alone tells me how trustworthy the predication is. Moderately reliable. Not terrific. Eh. Not particularly reliable. The hypothesis test for correlation tells me that the p value is less that any reasonable statistical level. Not particularly reliable. The
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