True or False...This is an example of a statistical question;
How many people in your family eat breakfast?
What is "False"
100
Which one of these values gives the most occurring number?
a. mean
b. median
c. mode
c. mode
100
What is the shape of a quadratic equation when graphed?
a parabola
100
True or False...A box plot separates all the data into four categories?
True
100
You want to use a graph that shows ranges of numbers at the bottom. Which graph would you use?
a. line graph b. histogram
c. circle graph
b. histogram
200
True or False...This is an example of a statistical question;
Record the amount of time each person in your family takes in the shower.
What is "true"
200
Find the mean of these numbers:
22, 22, 23, 21
22
200
The highest or lowest point on the graph of a quadratic is called what?
the vertex
200
The 5 data points that make up the box plot are the minimum, quartile one, quartile three, maximum, and...
a. mode
b. range
c. median d. mean
c. median
200
True or False... A box plot is a good graph to show the mean temperatures of different cities?
False, a box plot shows the median not the mean
300
A classmate wants to find out how much time students spend playing games each night. Which of the following would be the best method to gather data?
a. interview all the students in their class
b. interview random students at lunch
c. interview a sample of 100 students from each grade
c. interview a sample of 100 students from each grade
300
What is the median for this set of data?
22, 21, 23, 25
22.5 (if you guessed 22, you forgot to put the numbers in order from least to greatest)
300
What do you call this equation ax^2 + bx + c
standard form of a quadratic equation
300
If you were to construct a box plot for the following data what value would be your quartile three?
data set: 21, 24, 25, 26, 27, 30, 31
30
300
Which one of the following would make it easiest to find the mode? a. frequency table b. histogram c. bar graph
a. frequency table because it will show the times a particular number occurred.
400
You want to create a bar graph for comparing the different kind of shoes students wear at your school. After surveying several students, you find out there are too many brands of shoes to graph. Which of the following would be a solution?
a. pick the 5 most liked shoes and an "other" category b. give 7 shoes to pick from when surveying
c. another creative solution
a or b, or come up with your own solution
400
47 is added to the data set. Which of the following would it effect the most? (justify your answer)
data set; 22, 22, 23, 28, 30, 31.
a. median
b. mean
c. mode
a. mean
(the median moves 2.5 points from 25.5 to 28)
the mean moves 3 points from 26 to 29
400
the left and right side of a quadratic are always what?
symmetrical or the same
400
If you were to construct a box plot for the following data, what would be your quartile one?
data set: 45, 47, 48, 50, 52, 52, 57
47
400
Which one of the following scenarios would be best for using a circle graph?
a. the percentage of time spent on hw in each grade level
b. the different food groups present during school lunch
c. the different holidays celebrated
a. percentage of time spent on hw in each grade level
500
Which of the following surveys would create the best statistical data? (justify your answer)
a. finding the average amount of time students watch tv
b. finding the average amount of time students watch tv each night
c. finding the average amount of time students watch tv on the weekend?
b. finding the average amount of time students watch tv each night
500
Thomas Jones Bob wants to get an average of 90% on all his tests. So far he has scored a 85, 88, 91, and 93 on four tests. What must he get on his 5th test to get an average of 90% on all his tests?
a 93 (5 x 90 = 450 minus the total of the 4 test, 357. 450 - 357 = 93)
500
Find the answers to the following quadratic equation
x^2 + 4x - 12 = 0
(x + 6)(x - 2) = 0
x = -6 or 2
500
Which one of the following situations best utilizes the box plot? (justify your answer)
a. showing the mode temperatures of different cities
b. showing a range of temperatures in different cities
c. using the median temperature of box plots to compare different cities
b and c...box plots are good for showing ranges of data. They also can compare different median scores.
500
Which one of these graphs is best for showing a comparison of two NFL quarterbacks?
a. box plot
b. double bar graph
c. histogram