![Page 1: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/1.jpg)
![Page 2: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/2.jpg)
Statistical Thinking
with Trend Charts
![Page 3: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/3.jpg)
SAT Mean Scores of College-Bound Seniors (1995-2012)
YEAR WRITING SCORE ALL MALE FEMALE
2005-06 497 491 5022006-07 494 489 5002007-08 494 488 5012008-09 493 486 4992009-10 492 486 4982010-11 489 482 4962011-12 488 481 494
![Page 4: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/4.jpg)
SAT Mean Writing Score of College-Bound Seniors (2006-2012)
2012201120102009200820072006
497496495494493492491490489488
Year
Scor
es
SAT Mean Writing Score of College-Bound Seniors (2006-2012)
![Page 5: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/5.jpg)
TREND LINE CONSTRUCTION Prediction
ALL Predictions Error2006 497 Half-Average 496.25 0.752007 494 (2007, 495) 495 -12008 494 493.75 0.25
Slope m = -1.252009 493 Intercept b = 3003.75 492.5 0.5
2010 492 Half-Average 491.25 0.752011 489 (2011, 490) 490 -12012 488 488.75 -0.75
TREND PREDICTION LINE
Score = -1.25*Year + 3003.75
![Page 6: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/6.jpg)
Time Series Plot with Trend Line Predictions for Writing Scores
2012201120102009200820072006
497496495494493492491490489488
Year
Scor
esCombinedPredictions
Time Series Plot with Predictions for Writing Scores
![Page 7: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/7.jpg)
Moving Ranges and Margin of Error Prediction
Error Moving Range0.75 -1 0.75 1.75-1 0.25 -1 1.25
0.25 0.5 0.25 0.250.5 0.75 0.5 0.25
0.75 -1 0.75 1.75-1 -0.75 -1 0.25
-0.75
Average Moving Range = AMR = 0.9167
Moving Range Margin of Error = 3.27*AMR = 3.27*0.9167 = 2.9976
![Page 8: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/8.jpg)
654321
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Index
Mov
ing
Rang
esUMRLMRCenterlineLMRL
Moving Range Chart
![Page 9: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/9.jpg)
![Page 10: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/10.jpg)
2012201120102009200820072006
500.0
497.5
495.0
492.5
490.0
487.5
485.0
Year
UTLALLPredictionsLTL
Trend Chart with Statistical Margin of Error
![Page 11: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/11.jpg)
SAT Mean Male Writing Score of College-Bound Seniors (2006-2012)
2012201120102009200820072006
492
490
488
486
484
482
480
Year
Mal
e Sc
ore
SAT Mean Male Writing Score of College-Bound Seniors (2006-2012)
![Page 12: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/12.jpg)
SAT Mean Female Writing Score of College-Bound Seniors (2006-2012)
2012201120102009200820072006
502501500499498497496495494493
Year
Fem
ale
SAT Mean Female Writing Score of College-Bound Seniors (2006-2012)
![Page 13: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/13.jpg)
YEAR CRITICAL READING SCORE
MATHEMATICS SCORE
ALL MALE FEMALE * ALL MALE FEMALE1995-96 505 507 503 * 508 527 4921996-97 505 507 503 * 511 530 4941997-98 505 509 502 * 512 531 4961998-99 505 509 502 * 511 531 495
1999-2000 505 507 504 * 514 533 4982000-01 506 509 502 * 514 533 4982001-02 504 507 502 * 516 534 5002002-03 507 512 503 * 519 537 503
SAT Mean Scores of College-Bound Seniors (1995-2012)
![Page 14: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/14.jpg)
SAT Mean Scores of College-Bound Seniors (1995-2012)
2003-04 508 512 504 * 518 537 5012004-05 508 513 505 * 520 538 5042005-06 503 505 502 * 518 536 5022006-07 502 504 502 * 515 533 4992007-08 502 504 500 * 515 533 5002008-09 501 503 498 * 515 534 4992009-10 501 503 498 * 516 534 5002010-11 497 500 495 * 514 531 5002011-12 496 498 493 * 514 532 499
YEAR CRITICAL READING SCORE MATHEMATICS SCORE
![Page 15: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/15.jpg)
530
525
520
515
510
505
YEAR
Scor
es
ALLPredictionLTLUTL
Variable
COMBINED SCORES, Centerline Predictions, LTL, UTL
![Page 16: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/16.jpg)
545
540
535
530
525
YEAR
Scor
es
MALEPredictionLPLUPL
Variable
MALE MATH SCORES, Centerline Predictions, LTL, UTL
![Page 17: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/17.jpg)
515
510
505
500
495
490
YEAR
Scor
es
FEMALEPredictionLTLUTL
Variable
FEMALE MATH SCORES, Centerline Predictions, LTL, UTL
![Page 18: SAT Mean Scores of College-Bound Seniors (1995-2012) YEAR WRITING SCORE ALLMALEFEMALE 2005-06497491502 2006-07494489500 2007-08494488501 2008-09493486499](https://reader035.vdocuments.site/reader035/viewer/2022062317/5a4d1b337f8b9ab05999bec8/html5/thumbnails/18.jpg)