Question

find the mean and mode for the following frequency distribution class intervals : 330-369 370-389 390-409 410-429 430-449 450-469
frequency: 15,27,31,19,13,6​

Answer 1

Answer:

to find mean u can use the step deviation method this method is very easy to find the class un can 0.5 subtract from lower limit and 0.5 adding on upper limit to find continuous class length

and for mode

there was only one formula