1.Find the missing frequency f, if the mode of the given data is 154.

Classes

120-130

130-140

140-150

150-160

160-170

170-180

Frequency

2

8

12

f

9

7

plzz giv de answer as fast as possible......

Classes | 120-130 | 130-140 | 140-150 | 150-160 | 160-170 | 170-180 |

Frequency | 2 | 8 | 12 | f | 9 | 7 |

The mode for a continuos frequency distribution can be calculated using the formula,

Here, *l* = Lower limit of the modal class

*f* = Frequency of the modal class

*h *= Width of the modal class

= Frequency of the class preceding the modal class

= Frequency of the class following the modal class

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