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What is a sample statistics?
It is a value calculated from the sample values only.It is a value calculated from the sample values only.It is a value calculated from the sample values only.It is a value calculated from the sample values only.
What is the sample size for standard deviation?
There is no such thing. The standard error can be calculated for a sample of any size greater than 1.
Is work settings nominal or ordinal?
They are nominal.
What level of measurement is required to determine the mode?
nominal
What does square brackets mean in chemistry?
Isn't this the wrong section? >_> Square brackets generally refer to the concentration of whichever element or compound. For example [A] would refer the the concentration of A (generally calculated in moles/Liter or molarity).
What is a sample statistics?
It is a value calculated from the sample values only.It is a value calculated from the sample values only.It is a value calculated from the sample values only.It is a value calculated from the sample values only.
What is nominal moment?
Nominal moment is the entire calculated moment after applying load...
Which of these is calculated in current dollar values?
nominal GDP
How chlorine is calculated by using chlorotex reagent?
Most of the Chlorotex bottle's has chart on their label, which shows the color appeared by mixing sample and chlorotex, versus concentration.
What is the concentration of carbon dioxide in this sample?
well when the heart pumps then its the sample
A numerical value calculated for a sample is called a?
A numerical value calculated for a sample is called a descriptive statistic.
Can a pH of a water sample be calculated from a knowledge of its acidity?
Yes, the pH of water can be calculated from knowing its acidity. pH is defined as -log[H+]. This means that if one knows the concentration of hydrogen ion in solution, the pH is simply the negative logarithm (base 10) of that.
When calculating the cost of capital how should the share premium be calculated?
share premium could be calculated as by getting the difference between the market price of the share and its nominal price. Formula: Share Premium= Market Price - Nominal Price
Why should the concentration of sample be low in spectrophotometer readings?
When doing reading on a spectrophotometer, the sample being studied is either a color change or a precipitated compound, depending on the wavelength that it is being read. If it is a precipitated compound and it has a very high concentration, then you run the risk of the light being used to measure the absorbance not going through. In which case you have total absorbance but it is inaccurate in helping you determine the concentration of your sample because you are unsure where the concentration limit is for that wavelength, and your sample could possibly be able to absorb more. In which case you still can't calculate the concentration of the sample.
Why is a titration performed?
To find the unknown concentration of a sample by using a reagent with a known concentration. ( IE; molarity )
How do you calculate ic50 for antioxidant activity?
Scavenging capacity (%) = 100 - [(absorbance of sample - absorbance of blank) × 100/absorbance of control] The tests were done in triplicate. The IC50 values were calculated by linear regression of plots, where the abscissa represents the concentration of the tested plant extracts and the ordinate the average percent of scavenging capacity. The concentration of sample required to scavenge 50% of DPPH (IC50) were determined.
How could determine the concentration of ascorbic acid in an unknown sample?
The concentration of ascorbic acid in an unknown sample can be obtain by conducting a few steps by using the DCPIP test. Firstly, we must obtain the volume (dm ) of the sample solution which are required to turn the DCPIP solution (blue) colour into colourless. After obtaining the volume we use an electronic balance to obtain the mass of the sample solution in gram (g). Then we use the concentration formula of [mass (g) of solute per volume (dm ) of solution] to find out the concentration. Hence. The concentration obtained was the concentration of ascorbic acid.
