Spreadly new functions – TTest and Linear Regression

We have 2 new functions for your Spreadly app. 

A regression is a statistical analysis assessing the association between two variables. It is used to find the relationship between two variables. Linear Regression Definition states that it can be measured by using lines of regression. Regression measures the amount of average relationship or mathematical relationship between two variables in terms of original units of data. Whereas, correlation measures the nature of relationship between two variables. i.e.., positive or negative or uncorrelated.


T Test is often called Student’s T test in the name of its founder “Student”. T test is used to compare two different set of values. It is generally performed on a small set of data. T test is generally applied to normal distribution which has a small set of values. This test compares the mean of two samples. T test uses means and standard deviations of two samples to make a comparison. The formula for T test is given below:

Runnit Track is out now!

I wrote a new Running tracker app, because i hated the ones out there. If there is something it is missing, please get in touch, but it does all the basics.
Description
Runit is a very easy to use, fast run and cycle tracker. And gives you complete control over the data.
No need to create an account. No ads. No cost.
And you get full access over the data, nothing is hidden from you like every other app. You can see every point recorded.
This app will record your running or cycling, once you start tracking, even if you close the app. For the reason, continued use of GPS running in the background can dramatically decrease battery life.

Statsheet is available for free all this week.

And it is now available for your iPhone as well! Download it from here: itunes.apple.com/us/app/statsheet-statistics-spreadsheet/id735011797?mt=8 Statsheet is your Statistics Spreadsheet, with all the statistics functions you would expect to find in an expensive stats package. Like a very sophisticated calculator, this is a great way to practise statistics, and analyse stats. These are some of the functions you will find fully supported: AVEDEV – Find the average deviation STDDEV – Find the standard deviation NORMDIST – Find the normal distribution (x,mean,stddev,cumulative) NORMSDIST – Returns the standard normal cumulative distribution function. With a mean=0, stddev=1 ZTEST – one-tailed probability-value of a z-test (array,μ0,sigma) COMBIN – Returns the number of combinations for a given number of items. Use COMBIN to determine the total possible number of groups for a given number of items. BINOMDIST – Returns the individual term binomial distribution probability. BINOMDIST(number_s,trials,probability_s,cumulative) CORREL – Returns the correlation coefficient of the array1 and array2 cell ranges. Use the correlation coefficient to determine the relationship between two properties. CONFIDENCE – Returns a value that you can use to construct a confidence interval for a population mean.

Issue with the app store #51

For some reason, the guys at Apple have decided to set this checkbox to always be checked. Even if you have set it as not checked, you now have to uncheck it EVERY SINGLE TIME you submit an update.

Thanks, Apple. If you could remove that, it would be great!

What is wrong with you Apple?

Ok, so every now and again I get this email:

Dear developer,

We have discovered one or more issues with your recent delivery for “Mayhem Formula Race”. To process your delivery, the following issues must be corrected:

Missing required icon file – The bundle does not contain an app icon for iPad of exactly ‘167×167’ pixels, in .png format .

Though you are not required to fix the following issues, we wanted to make you aware of them:

Missing recommended icon file – The bundle does not contain an app icon for iPhone / iPod Touch of exactly ‘120×120’ pixels, in .png format for iOS versions >= 7.0.

Once the required corrections have been made, you can then redeliver the corrected binary.

Regards,

The App Store team


Except I DO have every single icon. Come on Apple, up your game.