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`x``x-3``x+3``3x`

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BTranscript

Time | Transcript |
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00:00 - 00:59 | hello friends today question is more certain series is as if each score is decreased by 3 then the mode of a new series B if every score is decreased by 3 then this understanding with the help of this X2 time and a big from every digit left in a minus 3 minus 3 x minus 3 minus x minus 3 |

01:00 - 01:59 | one time right time to that moment time at -3 they both will be X mines this is |

**What we already learned in class IX**

**What we will learn**

**Method to Calculate Mean by direct method**

**Method to calculate Mean by short-cut method**

**Method to calculate Mean by Step-Deviation method**

**Arithmetic mean of a continuous frequency distribution**

**Find the mean of the following distribution by direct method**

**Find the mean of the following distribution by Shortcut method**

**Find the mean of the following distribution by Step-Deviation Method**

**What is Median ? How do we calculate it ?**