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If a math drill increases each student's score by 30 points,
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20 Apr 2022, 01:00
20 Apr 2022, 01:00
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The GMAT math scores of a class of 10 students are 610, 620, 620, 650, 650, 650, 740, 740, 750, and 770.
If a math drill increases each student's score by 30 points, what would be the difference between the new mean score and the new mode score of the 10 stu-dent scores?
If a math drill increases each student's score by 30 points, what would be the difference between the new mean score and the new mode score of the 10 stu-dent scores?
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Part of the project: Skill Builder Project for a Q170
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GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: If a math drill increases each student's score by 30 points,
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20 Apr 2022, 12:18
20 Apr 2022, 12:18
1
Mean will remain same, however mode will increase by 30, so difference between new mean and mode will be 30
Re: If a math drill increases each student's score by 30 points,
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02 Nov 2022, 02:08
02 Nov 2022, 02:08
1
old mean = (610 + 620 + 620 + 650 + 650 + 650 + 740 + 740 + 750 +770) / 10 = 680
old mode = most frequently occurring number = 650 (occurs 3 times)
original difference = 680 - 650 = 30
increasing the all the numbers by 30 will increase both the mean and mode by 30 each, so the difference will remain the same
old mode = most frequently occurring number = 650 (occurs 3 times)
original difference = 680 - 650 = 30
increasing the all the numbers by 30 will increase both the mean and mode by 30 each, so the difference will remain the same
