Laptop
#4) *See graph on paper
Why might this graph be considered misleading?
☐ A) It uses pictures instead of bars (a pictograph)
☐ B) The y-axis does not start at zero, which exaggerates the differences between periods
☐ C) The bars are not labeled with their values
☐ D) It includes too many categories to compare
B
#1 Which of the following is an example of QUANTITATIVE data?
☐ A) A student's favorite movie genre
☐ B) The number of hours a student sleeps per night
☐ C) The brand of phone a student owns
☐ D) A student's hair color
B) The number of hours a student sleeps per night.
#7)
A gym wants to know the average number of weekly visits among all 800 members. The manager randomly
surveys 60 members and records their answers. What is the SAMPLE in this scenario?
The 60 members that were surveyed.
#9) Find the MEAN of the following data set: 6, 8, 10, 12, 14
10
#14) What is the SHAPE of this distribution?
*See graph on paper*
Symmetric
#5) The pie chart below shows the favorite pizza topping of 150 students. *see graph on paper*
What is the main issue with this graph?
The percentages add up to 112%.
#2)
A car dealership records the type of vehicle each customer purchases (Sedan, SUV, Truck, Motorcycle). This variable is:
Categorical
#8) A gym wants to know the average number of weekly visits among all 800 members. The manager randomly
surveys 60 members and records their answers. What is the POPULATION in this scenario?
The 800 members represented.
#10) Find the MEDIAN of the following data set: 22, 18, 25, 30, 27, 19, 24
24
#16) Which values are considered "resistant" to outliers?
Median and IQR
#6
Which of the following are common ways that a graph can be made misleading?
(Select ALL that apply)
☐ A) Starting the y-axis at a value other than zero
☐ B) Using pictures of different sizes to represent data values (a pictograph)
☐ C) Clearly labeling both the x-axis and y-axis
☐ D) Leaving out part of the total in a pie chart so it doesn't add to 100%
A, B, and D
#3)
Which of the following are examples of CATEGORICAL data?
(Select ALL that apply)
☐ A) Blood type
☐ B) Shoe size (US sizing)
☐ C) Favorite music genre
☐ D) The last four digits of a phone number
☐ E) Weight in pounds
A, C, and D
#19) What is the interquartile range (IQR) for this data set?
*see graph
10
#11) *See graph on paper*
What is the MODE of this Data set?
5
#15) Which measure of center is more appropriate to use when a data set has extreme outliers?
Median
#13) *See graph*
A student who watched 4 movies is at approximately what PERCENTILE within this group?
50%
#17) The standard deviation of a data set measures:
the typical distance from the mean
#23) Which group has more variability (spread) in homework time? *see graph on paper*
Group A
#12) *see graph on paper*
What is the median number of movies watched?
4.5
#20) Using the 1.5 × IQR rule, is the highest value of 65 hours an outlier? Why?
Yes, because it's greater than 55.
#18) What is the value of Q3? *see graph*
40
#24)
A student scored a 92 on a test. The class mean was 80 with a standard deviation of 6. What is the student's z-score?
2
#22) Describe how a graph that is skewed left, skewed right, and symmetric compares the mean to the median.
Skewed left: mean< median
Skewed right: mean> median
Symmetric: mean approx. = median
#25)
Two students take different exams. Student A has a z-score of 1.8 on her exam. Student B has a z-score of 2.1 on his exam. Relative to their own classes, who performed better? Why?
Student B, because the z-score is higher than student A.
#21) What is the shape of this distribution?
*see graph
Skewed left