
PASS Revision Session
Quiz
•
Mathematics
•
University
•
Practice Problem
•
Hard
Jordan Lyons
Used 6+ times
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21 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which type of graph do we use for numerical data?
Bar chart
Histogram
Boxplot
Clustered bar chart
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How do we tell whether we have violated the assumption of constant standard deviation?
Look at the histogram and see if residuals follow a normal bell curve distribution
Look at the residual plot and see if there are equivalent data points on the left and right
Look at the residual plot and see if there are equivalent data points above and below the horizontal axis
Check to see if the scatterplot shows a positive or negative relationship
3.
FILL IN THE BLANK QUESTION
3 mins • 1 pt
It is thought that 18.5% of all smartphone users have an iPhone. To test whether this is true, we sampled 100 smart phone users and found that 23 of them had iPhones. Calculate the test statistic with the relevant formula (to 3 decimal places)
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Which of the following excel commands will give us the correct p-value for the previous question?
=2*NORM.DIST (-1.159,0,1,TRUE)
=2*(1-NORM.DIST(1.159, 0, 1, TRUE))
=CHISQ.DIST.2T(1.159, 99)
=1-NORM.DIST(1.159,0,1, TRUE)
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
I'm interested in seeing how many hours PASS students have spent studying each week for STAT1250. To test this, I randomly select PASS students from the 11am morning session. Is this sample representative, random, both or neither?
Possibly represenative, not random
Both
Neither
Random but not representative
6.
FILL IN THE BLANK QUESTION
2 mins • 1 pt
Calculate the R-squared value for the ANOVA table. Answer as a percentage to 2 decimal places.
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Number of coffees consumed (in cups) is a _______ variable. Amount of coffee consumed (in mls) is a ________ variable
1) nominal
2) ordinal
1) categorical
2) numeric
1) nominal
2) continuous
1) Discrete
2) continuous
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