What is Assumptions: Definition and 119 Discussions

Statistics, like all mathematical disciplines, does not infer valid conclusions from nothing. Inferring interesting conclusions about real statistical populations almost always requires some background assumptions. Those assumptions must be made carefully, because incorrect assumptions can generate wildly inaccurate conclusions.
Here are some examples of statistical assumptions.

Independence of observations from each other (this assumption is an especially common error).
Independence of observational error from potential confounding effects.
Exact or approximate normality of observations (or errors).
Linearity of graded responses to quantitative stimuli, e.g. in linear regression.

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  1. S

    Use of calculus in a launch of a rocket - Relevant Assumptions

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  2. C

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  3. Jarvis323

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  4. Arne

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  5. B

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  6. A

    A What assumptions underly the Lorentz transformation?

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  7. gentzen

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  8. G

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  9. Killtech

    I About non-observable assumptions

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  10. C

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  11. C

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  12. Demystifier

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  13. T

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  14. E

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  15. NTL2009

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  16. Pencilvester

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  17. Clara Chung

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    Sorry for the poor image... A better picture can be viewed here https://www.dropbox.com/s/uyi01l27vu2fwyw/96.png?dl=0 I don't understand the assumption in the red box... If I don't ignore the atmospheric pressure, F_1 = integrate from 0 to h_1 (ρg(h_1-z)+p_a)dz = 1/2 ρgh_1^2 + p_a*h_1, similarly...
  18. W

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  19. M

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  20. P

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  21. Dadface

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  22. anorlunda

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  23. M

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  24. T

    Did i calculate the V/A/R of a plasma arc properly?

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  25. F

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  26. Cocoleia

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  27. G

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  29. S

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  30. C

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  31. J

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  32. A

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  33. O

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  34. R

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  35. DavideGenoa

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  36. jdawg

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  38. zonde

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  39. Lagraaaange

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  40. Math Amateur

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  41. L

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  42. F

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  43. Derek Potter

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  44. H

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  45. D

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  46. M

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  47. A

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  48. C

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  49. C

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  50. T

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