Overview
Question at position 1 See attached paper =1-5
The mean score on a test was 83%. One student scored 92%, and they were 1.5 standard deviations above the mean. What is the size of one standard deviation? Provide your answer as a number only; do NOT include the % sign.
The mean score on a test was 83%. One student scored 92%, and they were 1.5 standard deviations above the mean. What is the size of one standard deviation? Provide your answer as a number only; do NOT include the % sign.
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Stimulus for questions at positions: 2, 3, 4, 5
The following text applies to the questions at positions 2, 3, 4, 5
Instructions
Calculate the mean, median, mode, and sample SD for the data shown in the frequency table.
Descriptive Statistics Calculation
Data Value Frequency
1 6
2 4
3 7
5 3
Question at position 2
Determine the mode.
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Question at position 3
Determine the median.
Question at position 4
Calculate the mean.
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Question at position 5
Calculate the sample standard deviation
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Question at position 6
As part of a survey, students were asked to rate their agreement with the statement, "I enjoy spending time by myself." They had the following answer options:
1-strongly disagree
2-disagree
3-disagree slightly
4-agree slightly
5-agree
6-strongly agree
Question 6:
The data for this question can be best described as which of the following?
As part of a survey, students were asked to rate their agreement with the statement, "I enjoy spending time by myself." They had the following answer options:
1-strongly disagree
2-disagree
3-disagree slightly
4-agree slightly
5-agree
6-strongly agree
The data for this question can be best described as which of the following?
nominal
ordinal
ratio
interval
Question at position 7
Which of the following best describes the difference between interval and ordinal measurement scales?
Which of the following best describes the difference between interval and ordinal measurement scales?
Both provide quantitative information, but only one of them provides discrete values
Both provide numerical values, but only one of them has a "true 0"
Both provide order to the values, but only one of them provides truly numerical values
Both provide categorical data, but only one of them has logical order to the categories
Question at position 8 See attached paper
Match each term to its best description. (a measure of the proportion of the pieces of data in a set that are below a certain point, the third quartile value minus the first quartile value in a dataset, a measure of variability that is like an average of deviations from the mean)
standard deviation
percentile
interquartile range
Question at position 9
Which of the following types of sampling involves splitting all members of the population into groups, randomly selecting a certain number of groups, then using all individuals in those groups as part of the sample?
simple random sampling
stratified sampling
cluster sampling
convenience sampling
Question at position 10 See attached paper
A researcher is studying how encouragement affects people's willingness to keep trying on a difficult task. All participants are given an extremely difficult task to do.
Half the participants are assigned to a condition in which they get no feedback at all. The other half are assigned to a condition in which, no matter how they're doing, every two minutes, the researcher says something encouraging to them.
The researcher times each participant to see how long they'll keep trying on the task before they give up.
After the experiment, the researcher realizes that they may have made an error. There were multiple versions of the difficult task, and they didn't keep track of which participants were given which version. Although the versions are supposed to be pretty similar, they were concerned that the task version might also have impacted how long participants kept trying.
For this question, match the what's described to the term that best represents it.(dependent variable, independent variable, lurking variable, conditions)
feedback type?...........
long participants keep trying on the task?.........
encouraging feedback; no feedback?..........
which version of the task participants were given?........
Question at position 11
A student collected the following data about their classmates in their research methods class. Out of the 30 students in the class:
7 students said the class was more difficult than their other classes
11 students said the class was about the same difficulty as their other classes
12 students said the class was easier than their other classes
Which of the following are acceptable ways to display these data?
Check all that apply.
a table
a Pareto chart
a pie chart
a bar graph
Question at position 12 -See attached paper
graph image
Examine the graph above. Assume that the data shown are discrete, whole-number, numerical data.
Which of the following do we know to be true about this graph and the data it represents?
Check all that apply.
graph image
Examine the graph above. Assume that the data shown are discrete, whole-number, numerical data.
Which of the following do we know to be true about this graph and the data it represents?
Check all that apply.
25 of the difference scores had a value of 1
This graph is a frequency polygon
25% of the difference scores had a value of 1
The minimum score in this dataset was exactly -3
This graph is a histogram
there was 1 score of 25%
The minimum score in this dataset was in the -3.5 to -2.5 range
This graph is a line graph
Question at position 13 See attached paper
Use the following table. Calculate the value that should replace the ? in the table. Round to the nearest hundredth if necessary.
Love of Pizza Frequency Cumulative Frequency Relative Frequency Cumulative Relative Frequency
Low 5
Medium 7 ?
High 16
NA--haven't had it 2
Use the following table. Calculate the value that should replace the ? in the table. Round to the nearest hundredth if necessary.
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Question at position 14
What of the below is one of the responsibilities of the Institutional Review Board?
What of the below is one of the responsibilities of the Institutional Review Board?
Approving the informed consent documents that will be used for a study
Finding participants to be a part of the study
Gathering data for the study and storing it in a secure manner
Creating the original research plan that will be used for the study
Question at position 15
For a game of chance, a player has to pull 2 marbles out of a bag. There are 7 green marbles, 7 orange marbles, and 7 purple marbles.
They have already drawn their first marble. The chances of drawing a purple on the second draw are 7/21. Which of the following do we know for sure about this situation?
The second marble will be purple
The first marble was green
The second marble will be green
The first marble was purple
The second marble will be orange
The first marble was orange
The game uses sampling without replacement
The game uses sampling with replacement