1.
In a college of 1000 girls, the dean wanted to choose a sample of 30 girls to represent the whole school. She wanted to determine average height. Which survey would get the best results?
A.
Choose 30 gymnasts at the school.
B.
Choose 30 girls in the cafeteria at noon.
C.
Choose 30 girls on the basketball team.
D.
Choose every third girl out of 100 randomly selected names.
Hint
2.
In statistics ______.
A.
data is always presented in a fair and unbiased manner
B.
meaasures of central tendency can be used to mislead
C.
leaving values out of data analysis makes the data free of bias
D.
graphs cannot be used to mislead
Hint
3.
The table shows seven different companies and their prices for car detailing. Company A claims to have prices that are less than the prices of most of their competitors. Is this an accurate statement? Why?
A.
Yes, more companies charge $93 than any other price.
B.
No, Company A's price is lower than the mode, but higher than the prices of the 4 other companies.
C.
No, Company A's price is equal to those of most of the other companies.
D.
Not Enough Information Given
Hint
4.
Lara is running for student council president of the 8
th
grade class. She would like to poll how the students will vote on election day. Which sample is best for this situation?
A.
A random sample of 50 8
th
grade students.
B.
A random sample of 50 7
th
grade students.
C.
A random sample of 50 female 8
th
grade students.
D.
A poll of Lara's cross-country teammates.
Hint
5.
Which sample would provide the best data for a survey about favorite extra-curricular activities?
A.
Participants at swim practice.
B.
A random sample of students from 5 different homerooms.
C.
Students attending a Spanish Club meeting.
D.
Members of the tennis team.
Hint