I need help with this question. mean= 505, SD= 110 a) Estimate the 97.5 percentile of the data b) Estimate the first and third quartiles of the data.

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I need help with this question.

mean= 505, SD= 110

a) Estimate the 97.5 percentile of the data

b) Estimate the first and third quartiles of the data.

 

 

Figure 4.12: Two Data Sets with non-Normal Distributions
200
Score
Freq.
[200, 250)| 11,393
[250, 300) 20,874
[300, 350) 46,583
[350, 400) 94,037
[400,450) 143,630
[450, 500) 193,470
[500,550) 187,773
[550, 600) 158,138
[600, 650) 115,401
[650, 700) 66,066
[700, 750) 30,503
[750,800] 16,857
180
160
140
Jorshe
120
100
80
60
40
200 250 300 350 400 450 500 550 600 650 700 750 800
Figure 4.13: Class Intervals and Bar graph for Verbal SAT Scores (1996)
20
Transcribed Image Text:Figure 4.12: Two Data Sets with non-Normal Distributions 200 Score Freq. [200, 250)| 11,393 [250, 300) 20,874 [300, 350) 46,583 [350, 400) 94,037 [400,450) 143,630 [450, 500) 193,470 [500,550) 187,773 [550, 600) 158,138 [600, 650) 115,401 [650, 700) 66,066 [700, 750) 30,503 [750,800] 16,857 180 160 140 Jorshe 120 100 80 60 40 200 250 300 350 400 450 500 550 600 650 700 750 800 Figure 4.13: Class Intervals and Bar graph for Verbal SAT Scores (1996) 20
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