Some of their most useful and easy to use products are iShowU Instant and iShowU Studio. Both of these software programs are designed with user friendly interface and offer incredible features for video editing.iShowU Instant:This is a advanced real time screen recorder tool with lots of easy to access features, impressive presets, super fast type of capture engine, timers, audio filters, time lapse support and retina support abilities.You can buy this product with payment of $24 only whereas the standard plus advanced package is priced at $58 only.iShowU Studio:It is an effortless full screen type capture tool that can assist users in text editing, annotations, GIP generation, transitions and highlight management.Some of the best features included in this tool are slick editing interface, stunning zoom/pan options, keyboard supported animations, mouse highlighting, iOS Device recording, camera capture abilities, app & mic audio capture and screen recording. The standard software package is available with price tag of $79 only. The margin of error helps in constructing confidence intervals, which gives a range of plausible values for the population parameter. Margin of error is nothing but a range of values above and below the value of sample statistic. In other words, it is a statistic that measures the random sampling error in a survey. The confidence interval tells how close the sample statistic is to its true population parameter. If the margin of error is large, the sample statistic is far away from the true population parameter if the margin of error is small, the sample statistic is close to the population parameter.
Larger the sample size, smaller the value of margin of error will be.
Suppose the margin of error is 2 percent for a 95% confidence interval, it indicates that 95% of the times the sample statistic differs by 2% points from the true population parameter.
The critical value for 95% confidence level is 1.96, and The critical value for 90% confidence level is 1.64, The general formula of margin of error is as follows:įor example, the formula of margin of error for sample mean of z-test is given below: The margin of error is the product of the critical value of standard error. Some of the properties of margin of error are as follows: The formula for margin of error for proportion of z-test is as follows: The critical value at 99% confidence level is 2.58.
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