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One variable rises or falls, the other does the same. This data describes: A) Positive correlation B) Negative correlation C) No correlation D) Weak negative correlation
A) Positive correlation
Which scale of measurement are: RELIGION A)Nominal B)Ordinal C)Interval D)Ratio
A)Nominal
Data that has clear spaces between values, with data usually counted in whole numbers describes: A) Discrete variables B) Continuous variables
A) Discrete variables
Which of the following processes would calculate the median?A)Calculate the median location, with the given median location count from the bottom and/or top from the distribution to find the middle of the distribution
B)Count half of the distribution to find the mid-point, if there are two mid-points, divide by the total number of data points
C)Subtract the highest data point from the lowest data point
D)Order data points from smallest to largest, calculate the median location, with the given median location count from the bottom and/or top from the distribution to find the middle of the distribution
D)Order data points from smallest to largest, calculate the median location, with the given median location count from the bottom and/or top from the distribution to find the middle of the distribution
What a z score of -2.5 tell us?
2.5 standard deviations below the mean
Two variables move opposite one another, when one variable rises, the other falls. This data describes: A) Positive correlation B) Negative correlation C) No correlation D) Weak positive correlation
B) Negative correlation
Which scale of measurement are: HEIGHT A)Nominal B)Ordinal C)Interval D)Ratio
D)Ratio
Data falls on a continuous sequence A) Discrete variables B) Continuous variables
B) Continuous variables
How would you find the median with an ODD number of data points?
A) Find the middle value
What are the two pieces of information contained in a z score?
The location above or below the mean (from the sign of the number) and the distance in standard deviations away from the mean (from the magnitude of the number)
As a child get older, their weight increases. This data describes: A) Positive correlation B) Negative correlation C) No correlation D) Weak positive correlation
A) Positive correlation
Which scale of measurement are: TEMPERATURE IN FAHRENHEIT A)Nominal B)Ordinal C)Interval D)Ratio
C)Interval
The weight of a truck describes: A) Discrete variables B) Continuous variables
B) Continuous variables
How would you find the median with an EVEN number of data points?
B) Find the two middle values and average them
Fred scored a 68 on his PSYC1010 exam that had a class average score of 54 with a standard deviation of 8. Find Fred’s relative location within this distribution, or in other words, calculate Fred’s z-score.
1.75
The amount of free time you have and the number of sports you play. This data describes: A) Positive correlation B) Negative correlation C) No correlation D) Weak positive correlation
B) Negative correlation
Which scale of measurement are: STUDENT LETTER GRADE A)Nominal B)Ordinal C)Interval D)Ratio
B)Ordinal
Number of siblings describes: A) Discrete variables B) Continuous variables
A) Discrete variables
How would you find the mode of a dataset?
C) Find the value that occurs most frequently
Sarah scored a 52 on her ECON1010 exam that had a class average score of 58 with a standard deviation of 6. Find Sarah’s relative location within this distribution, or in other words, calculate Sarah’s z-score.
1.00
James wants to make a scatter plot comparing the life expectancy (y-axis or vertical axis) and the number of cigarettes smoked (x-axis or horizontal axis). What type of line of best fit should James expect his scatter plot to show? A) A horizontal line B) A positive slope line C) A negative slope line D) No line of best fit
C) A negative slope line
Which scale of measurement are: NAMED + ORDERED + EQUALLY DISTANT VARIABLES + CAN ACCOMMODATE ABSOLUTE ZERO A)Nominal B)Ordinal C)Interval D)Ratio
D)Ratio
How do you calculate the mean?
A)Mean=sum of all data points divided by 1/2 the number of data points
B)Mean=the number of data points divided by the sum of all data points
C)Mean=sum of all data points divided by the number of data points
D)Mean=the number of 1/2 data points divided by sum of all data points
C)Mean = sum of all data points divided by the number of data points
How would you calculate the range?
D) Subtract the highest and lowest data points
Calculate the range of this data: 24 82 12 3 74 77 31 23
79