Download Ph Stat For Mac Average ratng: 3,9/5 453 votes How to buy PHStat - a Statistical Add in for Excel For PC & Mac BUS 233 & BUS 430. MacConkey agar is a selective and differentiating agar that only grows gram-negative bacterial species it can further differentiate the gram-negative organisms based on their lactose metabolism.1 The selective and differentiating properties of MacConkey agar enables utilization for. MacConkey agar (MAC) is a bacterial culture medium named after bacteriologist Alfred T. PHStat for Mac? Thread starter Ram171 Start date Sort by reaction score Forums.
#HOW TO USE PHSTAT IN EXCEL 2016 FREE#
› Phstat For Excel 2016 Mac Free Download. The following video shows how to run a Student's t-test and a z-test in XLSTAT.After PHStat has downloaded and extracted successfully, open the Excel add-in file as you would open any other Office document (File Open). In the results page you now have that the hypothesis H0 should be rejected and that the students performed significantly worse than the students of the county. Results and interpretation of a z-test for the comparison of the mean of a sample to a value Opt for the option User defined and set the value to 0.3025.Ĭlick OK. In the Options tab, you need to set the variance for the z-test. In the first tab General, this time instead of the Student’s t-test option choose the option z-test. Setting up a z-test for the comparison of the mean of a sample to a value To go further we can now use the standard deviation for the math grades for the county. The following table shows that we cannot reject the null hypothesis Ho so we may suggest that the average class performance is as good as the average performance of the country. The results of the t-test appear in a new sheet. Results of the Student's t-test to compare the mean of a sample to a value For the last section Outputs, we select the only available option Descriptive statistics. In the Missing data tab, we can choose any option as we do not have missing data in this dataset. Then we enter 11.5 in the Theoretical mean field.
We know that the average of the class is inferior to the general average so we can select the option Mean 1 < Theoretical mean to run a one-sided test which is more accurate than a two-sided test. The first thing to select is the alternative hypothesis. We can move on to the tab Options to specify our analysis. As explained above we don’t have the information about the standard deviation of the population so we have to run a Student’s t test. The name of the column was included in our data selection so we tick the option Column labels.įinally, you have to decide if you want to run a t-test or a z-test. The results will be displayed in a new sheet as we keep the default option Sheet. If the data were spanned on several columns for the same sample we could use the other option. Here we have only one column corresponding to one sample to test. The data format is One sample per column. Press the Range selector and select the column B that contains the “Math average”. Go over to the menu Parametric tests and select the option One-sample t-test and z-test.
Setting up a Student's t-test for comparing the mean of a sample to a value We can use a t-test to determine if the difference between the average of the class and the average of all students in the county are similar or different with a risk of 5%. Descriptive statistics on the class performance can be computed using the function Descriptive Statistics. We don’t have the information about the variance of this statistic so we cannot run a z-test.
We want to compare the results of those students with the county average which is 11.5. The data correspond to the mathematic grade average for the first semester of a class of 33 students. Dataset to perform a mean comparison test - either a Student's t-test or a z-test This tutorial shows how to test the difference between an observed mean and a theoretical one, using the one sample t-test and z-tests, in Excel with XLSTAT.
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