Class Boundaries |
Frequency |

5-10 |
5 |

10-15 |
10 |

15-20 |
12 |

20-25 |
7 |

25-30 |
6 |

30-35 |
3 |

(the sum of all its values)/(the number of
values).

5+10+12+7+6+3=43/6

Mean=7.16

Another typical value is the median. To find the
median of a number of values first

arrange the data in ascending or descending order then locate the middle value, , If there

are odd number of data points then median is the middle values. If there are even

number of data points then median is mean of the two middle values.

arrange the data in ascending or descending order then locate the middle value, , If there

are odd number of data points then median is the middle values. If there are even

number of data points then median is mean of the two middle values.

So Median is

5,5,5,5, ,5,5,6,
,7,7,8,8,810,10, 11,12

**,18,25,26,27,27,29,29,29,30,31,32,43,45,54,58,61***,*__14,16__
14+16

=30/2

=15

MODE

The most common score in a set of scores is called the mode.

The most common score in a set of scores is called the mode.

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