Ccleaner for Android can be set to automatically run on schedule. But please check have u update it.
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Answer
To find mean of data add all the numbers in the set of data and divide the sum by the number of addends.
To find range, identify the difference between the highest value and lowest value in the set of data.
Explanation
Mean, mode, median and range are the primary measurements used to get the measures of central tendencies. To get the mean and range; first arrange the data in an ascending order, then identify the highest value and the lowest value in the set. The difference between these two data values gives the range of the set of values. For the mean, add all the set of values and then divide their sum with the number of values in the set of data.
A computer uses unallocated space also know as free space to keep a file that has been deleted in its disk until a new file takes it spot and overwrites it.
Could be anything?
Maybe you get an email from them on their PC, which means they have internet
