2006-09-23 06:00:11 · 7 answers · asked by Dez 2 in Science & Mathematics ➔ Mathematics
In analysis of population data, you cannot look at one number for an answer, you need a central tendency number (say, a mean) and then some confidence intervals (upper and lower bounds), to give you an idea of what range of values include valid answers
2006-09-23 06:17:15 · answer #1 · answered by ARule 2 · 0⤊ 0⤋
They are often used in real life: for example risk management, project planning and engineering. Knowing the possible variation you can plan for the best/ worst. Bounding a problem can provide useful insight into the degree of uncertainty.
Say you are investigating a new idea (product concept) but there is uncertainty in meeting some design parameters - you might decide to simulate its performance before making a 'real item'. If the lower bound of its performance (parameters all in worst conditions) is still above present technology then you can be fairly sure i you do go ahead with the project it will be better.
Statistical methods such as 'six sigma' are also used to reduce defects drive out variation in products/ processes.
2006-09-23 07:00:08 · answer #2 · answered by razorfish_98 3 · 0⤊ 0⤋
properly, via fact the information is to the closest centimeter, you will desire to state the better and decrease bounds of the two values. So, something between .5 under and purely below .5 above the mentioned values may well be the 'easily' values: r=225cm+-.5cm h=40cm+-.5cm In different words: (224.5<=r<225.5) cm (39.5<=h<40.5) cm To get the decrease sure, you utilize the decrease values interior the quantity equation, and to get the better sure, you utilize the better sure interior the quantity equation. v=(pi)(r^2)h vLower=(pi)(rLower^2)(hLower) =(pi)((224.5cm)^2)(39.5cm) =(pi)((22.45dm)^2)(3.95dm) =6254.3(dm^3)=6254.3 Liters vUpper=(pi)(rUpper^2)(hUpper) =(pi)((225.5cm)^2)(40.5cm) =(pi)((22.55dm)^2)(4.05dm) =6469.9dm^3=6469.9 Liters yet undergo in concepts, the better values we used are the values at which the mentioned ones would be rounded one up, so we would desire to constantly use the less than inequality, quite of under or equivalent to. So (6254.3<=v<6469.9) Liters
2016-12-18 15:33:55 · answer #3 · answered by ? 4 · 0⤊ 0⤋
Escape velocity of rockets trying to reach the moon.
2006-09-23 06:36:24 · answer #4 · answered by warmspirited 3 · 0⤊ 0⤋
I use this everyday interpreting test results for my patients!
2006-09-23 07:41:16 · answer #5 · answered by Anonymous · 0⤊ 0⤋
they set the limits
2006-09-24 05:55:09 · answer #6 · answered by wittylioness 1 · 0⤊ 0⤋
For what ???????????????
2006-09-23 06:13:36 · answer #7 · answered by ag_iitkgp 7 · 0⤊ 0⤋