Splitsal assumptions - Revision history

Daisy at 02:03, 19 August 2020

2020-08-19T02:03:54Z

2020-08-18T04:14:11Z

2020-08-18T04:13:51Z

2020-08-18T04:13:31Z

2020-08-18T04:13:11Z

2020-08-18T00:19:22Z

2020-08-18T00:18:52Z

2020-08-17T04:07:54Z

2020-08-17T04:07:27Z

2020-08-17T04:04:44Z

@@ Line 9: / Line 9: @@
 ===Standard deviation===
 Standard deviation (SD) is a measure of how much variation there is in a set of numbers. The SD helps to understand how a set of measurements are distributed around the mean of the population or sample.
-The standard deviation of paddock weights in cattle has been calculated from trial data to be approximately 12.5% (insert reference). For more general information on standard deviation and how to calculate it go to [https://en.wikipedia.org/wiki/Standard_deviation standard deviation ].
+The standard deviation of paddock weights in cattle has been calculated from some unpublished trial data to be approximately 10.9% to 14.6% in northern Australia. For more general information on standard deviation and how to calculate it go to [https://en.wikipedia.org/wiki/Standard_deviation standard deviation ].
 ===Normal distribution===

@@ Line 14: / Line 14: @@
 Splitsal generates a normal distribution of weights, based on the mean and standard deviation of a group. From this distribution the percent of the mob above and below a cutoff weight and the average weights of these two groups are estimated, see in Figure 1 below.
-[[file:Normaldistribution1.jpg|frame|left|Figure 1 - Mob breakdown under normal distribution]]
+[[file:Normaldistribution1.jpg|frame|centre|Figure 1 - Mob breakdown under normal distribution]]
 In a normal distribution, 95 percent of the observations (weights) lie within 1.96 standard deviations of the mean. The Splitsal program displays this range and users can look at these ranges to judge if the standard deviation should be increased or decreased to make the range fit their situation.

@@ Line 14: / Line 14: @@
 Splitsal generates a normal distribution of weights, based on the mean and standard deviation of a group. From this distribution the percent of the mob above and below a cutoff weight and the average weights of these two groups are estimated, see in Figure 1 below.
-[[file:Normaldistribution1.jpg|frame|Figure 1 - Mob breakdown under normal distribution]]
+[[file:Normaldistribution1.jpg|frame|left|Figure 1 - Mob breakdown under normal distribution]]
 In a normal distribution, 95 percent of the observations (weights) lie within 1.96 standard deviations of the mean. The Splitsal program displays this range and users can look at these ranges to judge if the standard deviation should be increased or decreased to make the range fit their situation.

@@ Line 14: / Line 14: @@
 Splitsal generates a normal distribution of weights, based on the mean and standard deviation of a group. From this distribution the percent of the mob above and below a cutoff weight and the average weights of these two groups are estimated, see in Figure 1 below.
-[[file:Normaldistribution1.jpg|frameless|Figure 1 - Mob breakdown under normal distribution]]
+[[file:Normaldistribution1.jpg|frame|Figure 1 - Mob breakdown under normal distribution]]
 In a normal distribution, 95 percent of the observations (weights) lie within 1.96 standard deviations of the mean. The Splitsal program displays this range and users can look at these ranges to judge if the standard deviation should be increased or decreased to make the range fit their situation.

@@ Line 14: / Line 14: @@
 Splitsal generates a normal distribution of weights, based on the mean and standard deviation of a group. From this distribution the percent of the mob above and below a cutoff weight and the average weights of these two groups are estimated, see in Figure 1 below.
-[[file:Normaldistribution1.jpg|center|frame|Figure 1 - Mob breakdown under normal distribution]]
+[[file:Normaldistribution1.jpg|frameless|Figure 1 - Mob breakdown under normal distribution]]
 In a normal distribution, 95 percent of the observations (weights) lie within 1.96 standard deviations of the mean. The Splitsal program displays this range and users can look at these ranges to judge if the standard deviation should be increased or decreased to make the range fit their situation.

@@ Line 4: / Line 4: @@
 ===Average (mean)===
-The average is a measure of central tendency for a population or sample. It is the sum of all the numbers divided by the number of values being summed or the size of the population or sample. For example: The average weight of a mob of cattle would be determined by adding together the weights of all the individual animals, then dividing this number by the total number of animals in the mob.
+The average is a measure of central tendency for a population or sample. It is the sum of all the numbers divided by the number of values being summed or the size of the population or sample.
 ===Standard deviation===
 Standard deviation (SD) is a measure of how much variation there is in a set of numbers. The SD helps to understand how a set of measurements are distributed around the mean of the population or sample.
 The standard deviation of paddock weights in cattle has been calculated from trial data to be approximately 12.5% (insert reference). For information on calculating standard deviation go to [[https://en.wikipedia.org/wiki/Standard_deviation | standard deviation]].