please answer just question 3

Categoryx Repetition Cumulative x. f 149 -100 5 199 -150 5 249 -200 8 299 -250 4 349 -300 2 Total 24 2- Calculate the mean, median, and mode, then calculate the coefficient of variation. 3- Examples data by the recurring curve method. Question2: The question measures the mental skills that the student acquired (01) If you know that it is the lengths of a group of students, it follows a normal distribution with an arithmetic mean of 170 cm and a deection 5 cm standard, one of the guys was randomly selected (X) Find from the following using the 2 tables: 1. P (X