Answer to Question #127524 in Statistics and Probability for Fatou Haydara

Question #127524

1. Circle the right Answer.
There were total 1020 members in BMCC Math Club. 50% of them are female. 45 out of 1020 are from Prof. X’s class. 20% of 45 students are international students. In order to join in the Math Club, students must take one exam. You can take the exam as many times as you want. Members meet every Wednesday in Room N736. (10 points)
a. 50% is a. Parameter or Statistic
b. 20% is a. Parameter or Statistic
c. 1020 is. Quantitative or Categorical
d. 736 is. Quantitative or Categorical
e. The number of times Continous or Discrete

2. At a recent chess tournament, all 15 of the participants had to fill out a form that gave their names, address and age. The ages of the participants were recorded as follows: 36, 48, 54, 92, 57, 63, 66, 76, 66, 80, 82, 65, 39, 77, and 45. Use the data to construct a frequency table and histogram with 3 classes.(15 points)
Classes. Class Boundaries. Frequency. Midpoint. Cumulative Frequency

Expert's answer

a. Statistic

b. Statistic

c. Quantitative

d. Categorical

e. Discrete

2) Age-class Count Midpoint Cumulative Frequency

20-49 4 34.5 4

50-79 8 64.5 12

80-100 3 90 15