y=ax 2 +bx+c. by comparing standard form and given parabola equations, we get a = 3, b=-6, c = 1. we know that the formula to calculate the x-coordinate of a vertex is -b/2a. hence, h = -(-6)/2(3) h = 6/6 = 1 therefore, the x-coordinate of a vertex is 1. ...
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Slovin’s formula is used to calculate the sample size necessary to achieve a certain confidence interval when sampling a population. This formula is used when you don’t have enough information about a population’s behavior (or the distribution of a behavior) to otherwise know the appropriate ...
speed is a scalar quantity since it does not specify the direction. q2 what is the formula to calculate the average speed? average speed is given by the formula: average speed = total distance / total time q3 define velocity. velocity is defined as the rate at which the object is moving...
How to calculate safety stock as a percentage of lead time When we previously wrote about reorder points and safety stock, we suggested the most common approach for safety stock calculation. This involved estimating a safety stock level based on current demand. To do this, multiply the average ...
function in Excel returns theresidual degrees of freedom, which is thetotal dfminus theregression df. You can use the degrees of freedom to get F-critical values in a statistical table, and then compare the F-critical values to the F statistic to determine a confidence level for your model...
CI = confidence intervals X with bar = the sample mean; the sample mean is used to calculate the upper and lower value of the interval z = the confidence level value. The standard of 95% confidence will be used. 95% confidence corresponds to a z-score of 1.96. Therefore, the confidence...
The per-unit variable cost of production remains constant for a given level of output, but the per-unit variable cost increases as the volume of output increases. Likewise, the per-unit variable costs decrease with the decrease in the level of output. You can calculate the total variable ...
This increases the confidence level. Competitive – The company with good margin of profit is a level above the peers in the competitive market. They have more opportunities because people prefer buying their goods leading to a continuous demand throughout the year. Growth potential – A very ...
How Do You Calculate Gross Domestic Product (GDP) Growth Rate? The GDP growth rate, according to the formula above, takes the difference between the current and prior GDP level and divides that by the prior GDP level. Thereal economic (real GDP) growth ratewill take into account the effects...