The COMPREHENSIVE TEST OF BASIC SKILLS (CTBS) USED BY A SCHOOL DISTRICT TO ASSESS STUDENT PROGRESS. TWO OF THE AREAS TESTED ARE MATH AND READING. A RANDOM SAMPLE OF STUDENT RESULTS WAS REVIEWED TO DETERMINE IF THERE IS AN ASSOCIATION (SCATTERPLOT) BETWEEN MATH AND READING SCORES ON THE CTBS. HERE ARE THE RESIDUALS PLOT, HISTOGRAM OF THE RESIDUALS, AND THE REGRESSION ANALYSIS OF THE DATA. USE THE INFORMATION TO ANALYZE THE ASSOCIATION BETWEEN THE MATH AND READING SCORES ON THE CTBS.
IS THERE AN ASSOCIATION? WRITE THE APPROPRIATE HYPOTHESES.
ARE THE ASSUMPTIONS AND CONDITIONS SATISFIED? LIST THEM AND EXPLAIN.
WHAT % DO YOU CONCLUDE? EXPLAIN.
CREATE A 95% CONFIDENCE INTERVAL FOR THE TRUE SLOPE.
EXPLAIN YOUR INTERVAL IN CONTEXT.