19. Achievement Test Scores The data shown represent the scores on a national achievement test for a group of 10th-grade students. Find the approximate percentile ranks of these scores by constructing a percentile graph. а. 220 d. 280 b. 245 e. 300 C. 276 Score Frequency 196.5-217.5 217.5-238.5 17 238.5-259.5 22 259.5-280.5 48 280.5-301.5 22 301.5-322.5 TO For the same data, find the approximate scores that cor- respond to these percentiles. f. 15th i. 65th 8. 29th h. 43rd j. 80th

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.