Download Ch.12 Review - SF Catholic Schools

Algebra 1B
Name: __________________________
Ch.12 Review
Simplify.
 10 7   2 3 
1. 


 5 2   3 1 
8 
 1.1 4   2.4




2. 3
3.8    3
2.2 

 10 4.7   4 0.9 

 

 2 1 
3. 3 

 7 5 
 2.5 0.2 


4. 6 4.2 2


1.8 5.4 


5. Use the data given to answer the following questions.
Cost (dollars): 9, 13, 48, 31, 20, 26, 39, 11, 7, 13, 38, 42, 23, 29, 22
a. Make a frequency table and a cumulative frequency table.
Weight
0-9
10-19
20-29
30-39
40-49
b. Make a histogram.
Frequency
Cumul. Freq.
Find the mean, median, mode and range of each data set.
6. 10, 23, 30, 42, 14, 21, 40, 30, 24, 9, 33, 35
6. Mean: _________________
Median: ________________
Mode: _________________
Range: _________________
7. Brianna scored 15, 21, 12, 16, 8, 14 points in the first 6 basketball games. How many does she have to score in the 7th
game to have an average of at least 15 points a game?
8. Points per Game: 103, 91, 83, 105, 97, 89, 110, 96, 91, 97, 101
a. Minimum: ____________
b. Maximum: ____________
c. First Quartile: __________
d. Median: ______________
e. Third Quartile: _________
f.
Make a box and whisker plot.
Determine whether each data set is qualitative or quantitative (circle one)
9. Cost of gas
9. qualitative or quantitative
10. Colors
10. qualitative or quantitative
Determine whether each data set in univariate or bivariate (circle one)
11. Height and weight of babies
11. univariate or bivariate
12. Grades on a test
12. univariate or bivariate
Determine whether the sampling method is random, systematic or stratified (circle one). Tell whether the method
will produce a good sample and why.
13. A bicycle maker checks the quality of every 5 bike.
random, systematic or stratified
14. A counselor chooses 25 students from each grade level to survey about their extracurricular activities.
random, systematic or stratified
Determine whether each question or sampling is biased or non-biased (circle one). Explain your answer.
15. Would you rather read a paper copy of a book or an electronic version of a book?
Biased or non- biased
16. You want to find out how many times a month students at your school go to the movies. You ask all your friends.
Biased or non- biased
You spin a spinner that has 20 equal sized sections numbered 1 to 20. Find the theoretical probability.
17. P(16)
18. P(even number)
17. _______________________
18. _______________________
19. P(not 9)
20. P(prime number)
19. _______________________
20. _______________________
You choose a marble at random from a bag containing 7 yellow marbles, 5 black marbles and 6 blue marbles.
Find the odds.
21. Odds in favor of yellow
22. Odds in favor of blue
21. _______________________
22. _______________________
23. Odds against black
24. Odds against blue
23. _______________________
24. _______________________
One hundred and twenty randomly selected students at Central High School were asked to name their favorite
subject. The results are as follows: Art – 24, Math – 36, English – 31, Social Studies - 29. Find the experimental
probability that a student selected at random makes the given response.
25. P(english)
25. _______________________
26. P(math)
26. _______________________
27. P(art)
27. _______________________
28. P(social studies)
28. _______________________
You spin a spinner that has 18 equal sized sections numbered 1 to 18. Find each probability.
29. P(2 or 4)
30. P(odd or 6)
29. _______________________
30. _______________________
31. P(multiple of 2 or odd)
32. P(odd or greater than 3)
31. _______________________
32. _______________________
You roll a black number cube and a white number cube. Find each probability.
33. P(black less than 4 and white even)
34. P(black odd and white 5)
33. _______________________
34. _______________________
35. P(black greater than 3 and black even)
36. P(black 3 or 4 and white prime)
35. _______________________
36. _______________________
You choose a tile at random from a bag containing 10 tiles with R, 8 tiles with S and 5 tiles with T. You replace the
tile and then choose again. Find each probability.
37. P(S and S)
38. P(T and T)
37. _______________________
38. _______________________
39. P(R and T)
40. P(T and S)
39. _______________________
40. _______________________
You choose a marble at random from a bag containing 8 yellow marbles, 6 red marbles and 9 blue marbles. You
pick a second marble without replacing the first. Find each probability.
41. P(red then blue)
42. P(yellow then yellow)
41. _______________________
42. _______________________
43. P(yellow then blue)
44. P(red then red)
43. _______________________
44. _______________________