Activity 2

Answer the questions:

24 male students and 12 female students are participating in an international conference in Poznan.

Question 1: What is the ratio of males to females?

Question 2: What proportion of the participants is male?

Question 3: What does standard deviation mean?

1. The norm.
2. The average difference from the norm.
3. The standard of something.

Question 4: If 27 out of 250 students failed an exam, what proportion, in percentage terms, failed?

Question 5: If the average score in a test is 57, and John scores 38, by how many points has he deviated from the norm?