Question
Average of 14 observations calculated by a student was
70 but when he again went through his observations he realised that he took value of three observations as 55, 63 and 51 in place of 74, 84 and 45 respectively and also realised that total observations taken by him was 13. Find the original average of all observations taken by him.Solution
Sum of 14 observations = 14 × 70 = 980 Original average = {980 + (74 + 84 + 45) - (55 + 63 + 51)}/13 = 1014/13 = 78
What is the purpose of the "Animations" tab in PowerPoint?
Eena Khande is creating her project report as a document and is interested in typing the same in an easy-to-use software with facility of formatting pag...
Which software application is typically used for creating text documents?
What is the purpose of the CONCATENATE function in Excel?
Which out of the following is true about cell range in MS Excel?
What is the short cut key to centre the paragraph?
Which formula is used to join text from two cells in a spreadsheet?
To make the selected text bold, the shortcut key is ____
In Windows operating system it is the long horizontal bar at the bottom of a screen.
What is the file extension of Window Media Video file?
