Statistics Quiz 4
You might find it helpful to print out the quiz and give yourself time to think about the questions. Read each question carefully and choose the answer that you think is most likely to be correct. You can only choose one answer for each question. When you are ready, mark your answers in the spaces on the computer screen (web page).
Look at the graph and problems and choose the correct answers.
Figure 1.
1. How many students weigh 70 to 74 kg?
2. In Figure 1, how many students weigh less than 60 kg?
3. In Figure 1, what percent of the students weigh 60 to 64 kg?
4. In Figure 1, which weight group has the highest frequency?
5. In Figure 1, what percent of the students weigh less than 70 kg?
Table 1.
Total
A survey asking about Internet access was conducted among 10th grade pupils in Iceland. A sample of 100 persons was taken from a total population of 4000 10th grade pupils. NB. Those who had their own computer had also access to the Internet.
6. How many 10th grade pupils in Iceland have access to the Internet according to Table 1?
7. How many 10th grade pupils in Iceland own computers with access to the Internet according to Table 1?
8. How many 10th grade pupils in Iceland do not have access to the Internet according to Table 1?
Below are exam score averages for three 10th grades in a school.
Table 2
9. How many 10th graders in the school took the exam? according to table 2
10. Find the avarage score of all the pupils according to table 2 above.
Percentage of correct answers =