The standard deviation, in itself, cannot be high nor low. If the same measurements were recorded using a unit that was a ten times as large (centimetres instead of millimetres), the standard deviation for exactly the same data set would be 1.8. And if they were recorded in metres the sd would be 0.018
The "z-score" is derived by subtracting the population mean from the measurement and dividing by the population standard deviation. It measures how many standard deviations the measurement is above or below the mean. If the population mean and standard deviation are unknown the "t-distribution" can be used instead using the sample mean and sample deviation.
You calculate standard deviation the same way as always. You find the mean, and then you sum the squares of the deviations of the samples from the means, divide by N-1, and then take the square root. This has nothing to do with whether you have a normal distribution or not. This is how you calculate sample standard deviation, where the mean is determined along with the standard deviation, and the N-1 factor represents the loss of a degree of freedom in doing so. If you knew the mean a priori, you could calculate standard deviation of the sample, and only use N, instead of N-1.
first of all i will need a compass,scale,protector,pencil,eraser,pen if you dont use you can use pencil instead of it.THEN
Go to the Timex web site and look up "manuals". They have enough of a listing to figure out the correct procedure for your device. Here is the URL for the page I'm speaking of. http://assets.timex.com/manuals/?timexBrand=core I own the Expedition Adventure Tech Digital Compass Watch, and the following instructions will calibrate its compass. A. To calibrate for magnetic north, press and hold HEADING (from TIME OF DAY mode only) until ROTATE WATCH TWICE appears in the display. B. Hold watch level relative to the horizon (on your wrist, in your palm, or on a non-metallic table). Rotate watch slowly two complete rotations (taking at least fifteen seconds per rotation). Press MODE when finished. (Two-step calibration: Upon completion of STEP A, press HEADING. Do not enter a value for declination angle. While in TIME OF DAY mode, press HEADING. A heading will be displayed. Noting heading value, adjust watch position for heading of 150 degrees. Initiate calibration by pressing and holding HEADING until ROTATE WATCH Twice is displayed. Repeat calibration procedure as discussed in Step A. At completion of calibration proceed normally to Step C.) C. Watch will then call for you to enter DECLINATION. Pressing HEADING will exit calibration mode and leave watch set to measure magnetic north. Entering a declination value instead will allow the watch to point to true north, by adjusting for the angle, which varies for different spots on the globe. D. To set watch for true north, enter declination angle for your location from the chart below. Press START to advance flashing TENS OF DEGREES, press MODE to select DEGREES, then START to advance. Press MODE to select direction, then START to switch between E and W. Press HEADING to exit calibration and save new values. TABLE 1. Declination angles for major world cities: Anchorage . . . . . . . . .22E Little Rock . . . . . . . . . 3E Seattle . . . . . . . . . . . . .19E Atlanta . . . . . . . . . . . . 4W Livingston, MT . . . . . .14E Shanghai . . . . . . . . . . . 5W Bombay . . . . . . . . . . . 1W Munich . . . . . . . . . . . 1E Toronto . . . . . . . . . . .11W Boston . . . . . . . . . . .16W New York City . . . . . .14W Vancouver . . . . . . . . .20W Calgary . . . . . . . . . . .18W Orlando . . . . . . . . . . . . 5W Washington DC . . . . .10W Chicago . . . . . . . . . . . 3W Oslo . . . . . . . . . . . . . . 2W Waterbury, CT . . . . . .14W Denver . . . . . . . . . . . .10E Paris . . . . . . . . . . . . . . 2W Jerusalem . . . . . . . . . 3E Rio De Janeiro . . . . . 21W London . . . . . . . . . . . 4W San Francisco . . . . . . .15E For further declination angle information, see the TIMEX website www.timex.com. Jimi_Tomorrow
Typically the compass rose. Some systems use a heading tape instead.
Use %RSD when comparing the deviation for popolations with different means. Use SD to compare data with the same mean.
Iron or steel. Since it is a magnet, a compass will point to iron instead of pointing North.
In a data sample, the purpose of quartile deviation is a way to measure data dispersion instead of using the range. The quartile deviation is found by subtracting the lower quartile from the upper quartile, and dividing this result by two.
I believe this is called "comp time" (compensated time)
A compass - can only indicate a direction to travel. A GPS receiver - can not only show you which direction to go, but how far away you are from your destination.
Yes, a compass needle will point south of the equator instead of north. The Earth's magnetic field causes the needle to align itself with the magnetic poles, so the compass will indicate south instead of north in the southern hemisphere.
Deviation-based outlier detection does not use the statistical test or distance-based measures to identify exceptional objects. Instead, it identifies outliers by examining the main characteristics of objects in a group.
A compass - can only indicate a direction to travel. A GPS receiver - can not only show you which direction to go, but how far away you are from your destination.
No. Standard deviation is the square root of the mean of the squared deviations from the mean. Also, if the mean of the data is determined by the same process as the deviation from the mean, then you loose one degree of freedom, and the divisor in the calculation should be N-1, instead of just N.
An oblique heading refers to writing headings using oblique text. These texts are similar to italics, but they lean right and they are only distorted versions of the typefaces instead of separate glyphs.
When a compass gets near an electromagnet, the magnetic field produced by the electromagnet interferes with the Earth's magnetic field, causing the compass needle to align with the electromagnet's field instead. This phenomenon is known as magnetic deflection.