Question 1 Which of the following indicates how many observations fall into various categories?
A.The frequency table 
B.The sample table 
C.The tabulation scale 
D.The Likert scale 

Question 2 Which of the following statements is true regarding the data set 10, 10, 10, 10, and 10?
A.The range is zero 
B.The standard deviation equals zero 
C.The interquartile range equals zero 
D.all of the above 

Question 3 A sample of 20 observations has a standard deviation of 4. The sum of the squared deviations from the sample mean is:
A.304 
B.400 
C.288 
D.320 

Question 4 Data that arise from counts are called:
A.counted data 
B.discrete data 
C.nominal data 
D.continuous data 

Question 5 Which of the following correctly describes the relationship between a sample and a population? 
A.A sample is a group of subjects selected from a population to be studied. 
B.A population is a group of samples that may or may not be included in a study 
C.A population and a sample are not related. 
D.A sample is a group of populations that are subject to observation. 


Question 6 What is the term for a characteristic or attribute that can assume different values?
A.exponent 
B.sample 
C.variable 
D.datum 


Question 7 If a value represents the 95th percentile, this means that
A.there is a 5% chance that this value is incorrect 
B.95% of all values are below this value 
C.95% of the time you will observe this value 
D.95% of all values are above this value 

Question 8 Which of thefollowing are the three most common measures of central location?
A.Mean, median, and variance 
B.Mean, variance, and standard deviation 
C.Mean, median, and standard deviation 
D.Mean, median, and mode 

Question 9The average score for a class of 30 students was 75. The 20 male students in the class averaged 70. The 10 female students in the class averaged:
A.85 
B.75 
C.70 
D.60 

Question 10 A histogram that is positively skewed is also called
A.symmetric 
B.balanced 
C.skewed to the right 
D.skewed to the left 

Question 11Gender and State are examples of which type of data?
A.Continuous data 
B.Ordinal data 
C.Categorical data 
D.Discrete data 



Part 3 of 3 - 

Question 19The scatterplot is a graphical technique used to describe the relationship between two numerical variables. True 
False 

Question 20 Individual observations within each category may be found in a frequency table. 
True 
False