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1) On this page http://www.easycalculation.com/area/learn-triangle.php the formula for calculating the area of a trianble is shown as l x b The correct formula is l x b /2[Admin:Fixed] |
| Name: Glenn | IP: 67.204.252.218 | Added: 2009-05-05 |
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2) http://www.easycalculation.com/physics/classical-physics/learn-force.php
[In the second case mentioned at above URL: answer should be 5 m/s^2][Admin: Fixed] |
| Name: Ravinder | IP: 192.234.216.191 | Added: 2009-04-15 |
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3) Your Periodic table says that elements 58 to 71 are both lanthanides and actinides. Actinides are elements 90 to 103.[Admin: Fixed] |
| Name: John | IP: 152.91.8.100 | Added: 2009-03-03 |
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4) I used the easycalculation.com age calculator. At the bottom the the page you stated "Online Age, Birhday Calculation." Check your spelling of birthday![Admin: Fixed] |
| Name: Scott | IP: 24.130.160.128 | Added: 2009-02-23 |
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5) The geometric mean calculator is not responding.
Please fix.[ADMIN:Fixed] |
| Name: Rex | IP: 99.169.194.163 | Added: 2008-12-10 |
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6) BMI calculation returns 'obese' for some
values which are clearly not. For example:
Weight: 80 Pounds
Height: 5'4" (163 CM)
Results:
SI Units: 13.69
US Units: 13.92
UK Units: 86.91
Your category is Obese
[Admin: Fixed] |
| Name: Paul | IP: 129.33.49.251 | Added: 2008-01-29 |
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7) On both the Simple Regression Tutorial and the Simple Regression Calculator, you give the formula for the slope of the line as:
Slope(b) = NΣXY - (ΣX)(ΣY) / (NΣX2 - (ΣX)2)
However, I believe the terms to the left of the division symbol should be enclosed in brackets, i.e.:
Slope(b) = (NΣXY - (ΣX)(ΣY)) / (NΣX2 - (ΣX)2)
as indicated in the actual calculation just below it.[Admin: Issue Fixed] |
| Name: Jim | IP: 69.120.8.172 | Added: 2007-12-17 |
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8) When using the correlation coefficient calculator, I input the following x values:
x = 4.63, 5.81, 6.10, 6.10
I also input the following "y" values:
y= 4.24, 5.33, 5.59, 5.40
It should have given me an r value = .989
However, it gave me a value of 2.something. I've tried it several times and kept on getting the same incorrect answer.
However, when I use whole numbers, it generates a correct correlation coefficient.
[Admin: Issue Fixed] |
| Name: Kirk | IP: 12.198.147.250 | Added: 2007-11-04 |
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9) Bandwidth calculator page has these errors at the bottom
kibibit => kilo binary bit, mebibyte => mega binary bit, gibibyte => giga binary bit. [Admin: Issue Fixed] |
| Name: Warren | IP: 210.246.20.139 | Added: 2007-08-04 |
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10) There seems to be an the divisor for the standard deviation page. The page reads
Step2: Use the formula
s = square root of[(sum of Xsquared -((sum of X)*(sum of X)/N))/(N-1)]
= square root of[(55-((15)*(15)/5))/(5-1)]
= square root of[(55-(255/5))/4]
= square root of[(55-45)/4]
= square root of[10/4]
= square root of[2.5]
s = 1.58113
U have 255/5 as 45 but shouldn't it be 51?
[Admin: Issue Fixed] |
| Name: Mark | IP: 192.43.65.245 | Added: 2007-07-04 |
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