Psych Stats exam 1
120 students came to my party. I sampled 5 of them to ask how many cookies they ate. Here are my results: Cookies 1 3 3 2 1 What is the standard deviation for this data? Remember, this is a sample.
1
120 students came to my party. I sampled 5 of them to ask how many cookies they ate. Here are my results: Cookies 1 3 3 2 1 What is the variance for this data? Remember, this is a sample.
1
120 students came to my party. I sampled 5 of them to ask how many cookies they ate. Here are my results: Cookies1 1 3 2 1 What is the mode for this data?
1
I asked my class what they had for breakfast. 10 students had cereal, 5 students had eggs, and 3 students had no breakfast. How many variables are represented here?
1
I want to know how many web-enabled devices students have with them. I sampled 5 students. Here is their data: Number of devices 4 3 5 5 2 What is the s for this data?
1.3
I want to know how many web-enabled devices students have with them. I sampled 5 students. Here is their data: Number of devices 4 3 5 5 2 What is the variance for this data?
1.7
I asked my class what they had for breakfast. 10 students had cereal, 5 students had eggs, and 3 students had no breakfast. What is the frequency of cereal?
10
I asked my students how many headaches they had experienced in the last week. Below is the data: 1 5 2 3 0 0 3 2 0 0 2 1 Calculate ∑ X
19 Sum
120 students came to my party. I sampled 5 of them to ask how many cookies they ate. Here are my results: Cookies 1 3 3 2 1 What is the median for this data?
2
120 students came to my party. I sampled 5 of them to ask how many cookies they ate. Here are my results: Cookies1 3 3 2 1 Calculate the mean for this data.
2
15 recent college graduates were asked how many hours they spent watching Netflix within the last 24 hours. Here are their results: Netflix 1 3 6 2 1 2 0 10 2 4 0 4 9 5 5 What is the mode for these data?
2
15 recent college graduates were asked how many hours they spent watching Netflix within the last 24 hours. Here are their results: Netflix 1 3 6 2 1 2 0 10 2 4 0 4 9 5 5 what is the median?
3
15 recent college graduates were asked how many hours they spent watching Netflix within the last 24 hours. Here are their results: Netflix 1 3 6 2 1 2 0 10 2 4 0 4 9 5 5 What is X for these data?
3.6
I want to know how many web-enabled devices students have with them. I sampled 5 students. Here is their data: Number of devices 4 3 5 5 2 What is the ( ∑ X ) 2 for this data?
361
Calculate (sum of x) squared
361 square the sum
I want to know how many web-enabled devices students have with them. I sampled 5 students. Here is their data: Number of devices 4 3 5 5 2 What is the mode for this data?
5
Calculate sum of x squared
57 (square each number)
If my hypothesis is that "wearing glasses causes you to be smarter", then "wearing glasses is the ______ variable
Independent
Go to https://www.census.gov/quickfacts/fact/table/US# (Links to an external site.) On this page, you see that there is a lot of information from the census bureau. Under the population heading, the number 328,239,523 is a ______.
Parameter because it is a number based on population data.
I asked my class what they had for breakfast. 10 students had cereal, 5 students had eggs, and 3 students had no breakfast. If I were to graph this data, what would I create? none of these Histogram scatterplot Bar Graph
bar graph
I asked my class what they had for breakfast. 10 students had cereal, 5 students had eggs, and 3 students had no breakfast. What kind of data do I have? categorical or continuous
categorical
If I have a hypothesis that wearing glasses causes you to become smarter, then the number of people wearing glasses is _____ data.
categorical because they are in a divided group.
I wanted to know how much time my students spend watching Netflix. Here is the data: 2 3.5 1.5 4 6.4 3 4.5 Continuous or categorical
continuous
For one section of this class, I calculate the average grade on an exam. The average grade is a(n):
descriptive sample because it describes the obtained data
I asked my class what they had for breakfast. 10 students had cereal, 5 students had eggs, and 3 students had no breakfast. If I graph this data, what would be my Y axis? abscissa Breakfast Ratio frequency
frequency
Go to https://www.census.gov/quickfacts/fact/table/US# The percentage of people who identify as "Two or More Races" is _______ data.
frequency and categorical because there are divided groups and...
If I graph this data, I will create a: histogram bar chart scatterplot none of these
histogram
For one section of this class, I calculate the average grade on an exam. I want to use this data to determine what the grade distribution will be for all of the sections of the class. The grade distribution for all of the sections of the class is calculated using a(n)
inferred because the sample data is being used to infer the entire population.
I look at the thermometer. I see that it is 10o Celsius. This data is: Ratio Interval Nominal Ordinal
interval
I asked my class what they had for breakfast. 10 students had cereal, 5 students had eggs, and 3 students had no breakfast. What kind of data do I have? Ratio Interval Nominal Ordinal
nominal
I assign people from the USA the number 2. People from Mexico are assigned the number 3. People from Canada are assigned the number 1. This data is: Ratio Interval Nominal Ordinal
nominal
If I measure what is your major, I will get _____ data. Ratio Interval Nominal Ordinal
nominal
Rating how much you love doing homework on a scale from 1-10 gives you ____ data. Ratio Interval Nominal Ordinal
ordinal
If I have a hypothesis that wearing glasses causes you to become smarter. I measure "smartness" by looking at my participants' IQ score. The IQ score is _____ data Group of answer choices
quantitative and measurement because
I measure everyone's height. The data I get is: Ratio Interval Nominal Ordinal
ratio
For one section of this class, I calculate the average grade on an exam. I want to use this data to determine what the grade distribution will be for all of the sections of the class. The section that I measured is the:
sample, because it is only a subset of the population.
120 students came to my party. I sampled 5 of them to ask how many cookies they ate. Here are my results: Cookies1 3 3 2 1 What symbol represents the mean for this data?
x bar
1 5 2 3 0 0 3 2 0 0 2 1 calculat X6
0
What is sum (x- mean for pop)
0