1. Around 10000 students of different age groups are currently studying at AlUB who belong to families with different economic status and religion. Their height and blood group also differ. Students having CGPA less than 2.50 are considered to be under probation. Now, identify which of these highlighted variables are qualitative and which are quantitative.3. A fair coin is tossed twice. Let X be the number of heads. Find the mean and variance of X.\f6. The quiz scores of a probation student in Math 1 course at AlUB are recorded as: 1, 5, and 3. Calculate the standard deviation of the given scores of that student