# Sometime you have a hit, World Facebook 2015 with 10,000 downloads in a day

# Spreadly new functions – TTest and Linear Regression

**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!

# 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.

# Untimed events now in Bootcamp iOS app

# Issue with the app store #51

# Bootcamp v1.0 is out now

Sent from my iPhone

# What is wrong with you Apple?

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