IV/DV
Vocab
Mean, Median, Mode
Variables
Short Answer
100
Mia is training for a marathon. As she reads through her food & fitness tracking journal, she notices that she runs more miles on the days where she eats an apple with breakfast. What is the dependent variable in this scenario?
Amount of miles Mia runs each day
100
In statistics, a population is:
the entire group to which a law of nature applies
100
The mode is defined as
the most frequently occurring score
100
GRE score is an example of what type of scales?
interval
100
Draw a positive skewed distribution
200
In an experiment on group dynamics, participants are placed in a group consisting of either three or eight people. During the experiment, group members work together to solve a puzzle. After completing this task, participants report how satisfied they are with the other members of their group. In this example, the number of people in the group is the ______ variable, and satisfaction with the other members of their group is the ______ variable.
independent; dependent
200
______ refers to how “flat” or “peaked” a normal distribution is and indicates how much variability there is in the distribution of scores.
Kurtosis
200
A score that is extremely high or extremely low compared with most other scores in a dataset is called a(n):
outlier
200
Gender is an example of a/an _____________________________ variable.
Qualitative
200
Use the data set below to construct a frequency distribution table:
7, 11, 12, 8, 11, 9, 7, 8, 11, 12, 9
Score f
7 2
8 2
9 2
10 0
11 3
12 2
N = 11
300
Carlos is developing a new chocolate chip recipe. While testing recipes out, he notices that when he adds less and less flour to the cookie dough, the cookies get wider and spread out on the pan. What is the dependent variable in Carlos’ experiment?
Size of baked cookies
300
In statistics, a symmetrical, bell-shaped polygon is called a/an?
Normal curve
300
What is the mean for the following set of scores: 19, 1, 1, 2, 2?
5
300
Gold, silver, and bronze medals at the Olympics are examples of what type of scales?
Ordinal
300
A group of 10 students participated in a study of nutritional awareness. What are the estimated population variance and standard deviation?
20, 19, 22, 20, 15, 18, 15, 21, 19, 20
Var = 5.43
SD = 2.33
400
Students at a University were split into two groups and each received a different text for a philosophy course. Once group received a traditional text book, while the other received an interactive textbook on a tablet computer. After the course, the final exam grades between the two groups of students was compared. What is the independent and dependent variable?
Independent Variable: Type of book used in college class
Dependent Variable: Final exam grade
400
When we refer to a score’s deviation, we are referring to
how far it is from the mean.
400
Find the median of 7, -4, 9, -7, -2, 5
1.5
400
Suppose you have a set of normally distribution data where the mean is 120 and the standard deviation is 15. What score is located at -3
75
400
Suppose you received a 95 on an exam where the mean score was 83. What is your score's deviation?
+12
500
Over the past few weeks, Briana has been conducting an experiment to see what type of bread grows the most mold within a given period of time. She’s chosen 6 different types of bread, and as time has passed, she’s measured the areas of each mold patch that’s grown on the respective bread slices. What is the Independent variable?
Bread type
500
Standard deviation is defined as the square root of the
Average of the squared deviations around the mean
500
Find the range of 6, 2, -7, 2, -5, 11, 3, -4, 0, 9
18
500
From these set of numbers, what is the standard deviation?
5,4,6,39
14.7
500
Find the mode, median, and mean from the following numbers:
8, 7, 2, 4, 4, 8, 2, 4, 6, 5, 7, 3, 9, 4, 5, 4, 7
Mode = 4
Mdn =5
Mean = 5.24