please help i ams stuck

KEY QUESTIONS Lesson 17 1. Jesara is buying a home that will require a mortgage (home buyer's bank loan). The bank wants to know her monthly salary. She works on commission, so she must calculate her average monthly salary. Given her income for the rst six months of the year, what is her average salary? Which central tendency measure describes this average most accurately? [5 marks] Jan$3675, Feb-$4250, Mara-$3225, Apr$2985, May$3650, Jun$4600 2. 20 students recorded their pulse rates as follows: 63, 78, 79,75, 73, 72,62, 75, 77, 77, 69, 80, 72, 66, 78,78, 74, 65, 66, 78 State the mean, median, mode, ran-e, variance) and standard deviation. m E\" M51