Important: This function has been replaced with one or more new functions that may provide improved accuracy and whose names better reflect their usage. Although this function is still available for backward compatibility, you should consider using the new functions from now on, because this function may not be available in future versions of Excel. For more information about the new function, see. Syntax VARP(number1,[number2].) The VARP function syntax has the following arguments: • Number1 Required.

The first number argument corresponding to a population. Number arguments 2 to 255 corresponding to a population.

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Remarks • VARP assumes that its arguments are the entire population. If your data represents a sample of the population, then compute the variance by using VAR. • Arguments can either be numbers or names, arrays, or references that contain numbers.

• Logical values, and text representations of numbers that you type directly into the list of arguments are counted. • If an argument is an array or reference, only numbers in that array or reference are counted. Empty cells, logical values, text, or error values in the array or reference are ignored. • Arguments that are error values or text that cannot be translated into numbers cause errors.

• If you want to include logical values and text representations of numbers in a reference as part of the calculation, use the VARPA function. • The equation for VARP is: where x is the sample mean AVERAGE(number1,number2,) and n is the sample size. Example Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. For formulas to show results, select them, press F2, and then press Enter.

If you need to, you can adjust the column widths to see all the data. Strength 1345 1301 1368 1322 1310 1370 1318 1350 1303 1299 Formula Description Result =VARP(A2:A11) Variance of breaking strengths for all the tools, assuming that only 10 tools are produced (entire population). 678.84 =VAR(A2:A11) This example uses the VAR function, which assumes only a sample of the population, and returns a different result.

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Question: My car is stripped down to bare metal, what should I use to help adhesion to the metal? Matrix MP-550 Self-Etch Primer is a two-part primer that chemically protects against the corrosion process. Recommended for protecting bare metal, galvanized steel and aluminum, MP-550 gives medium film build to help eliminate imperfections and can be lightly sanded. Surface preparation: Remove tar and grease with Wax and grease remover of your choice before sanding. Sand surface with 180 to 220 grit dry and re-clean surface. If metal surface is badly pitted or rusted, the rust must be removed. Remove by grinding or sandblasting until all rust is removed.

Aluminum and stainless steel MUST be sanded with 150 to 220 grit dry sandpaper even if a metal prep or self etching primer is used. Prime aluminum and stainless steel within 72 hours, and prime bare steel immediately after cleaning. Mixing: Mix 1 Part MP550 Primer with 1Part MA505 Activator. Application: Apply 1 to 2 coats, wait 30 minutes and then apply MP2K Urethane Primer. Question: What is the difference between Lacquer Primer and Urethane Primer? Urethane primer is about 50 times better. Many shops have not realized that lacquer primer is the most expensive primer to use in the market.

All though the price tag is an attractively inexpensive cost initially, the side affect causes a transparent high cost and many shop owners never even notice. The number one cause of unsatisfied customers after experiencing an automotive finish repair was due to the use of poor quality undercoats. Lacquer primer is made of talc and resin and is categorizes as a thermoplastic type of paint resin. What is thermoplastic? The simplified answer is thermoplastic products can usually become a liquid state again. For this example, let's say we apply some lacquer primer on a surface and let it dry (notice I did not say cure) outside for one week, a month, or even 2 years. We pull the car inside and take a razor blade and scrape off the primer and put it in your mixing cup.