Plz answer me in 10 mints plz

Answer the following questions: 1). What is the median class? 2). What is Zf? 3). What is Cumulative frequency of preceding median class? 4). What is the lower limit of median class? 5). what is the class size of the data? 6). What is frequency of median class? 7). Compute median for following data? Give precise answer, unnecessary details will lead to deduction. * (1 0 Points) X F 150-154 5 155-159 2 160-164 6 165-169 8 170-174 9 175-179 11 180-184 6 185-189 3