QNT 275 NEW FINAL EXAM 2016
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What is the name of the variable that's used to predict another variable?
Standard error of the estimate
Coefficient of determination
Professors at a local university earn an average salary of $80,000 with a standard deviation of $6,000. The salary distribution is approximately bell-shaped. What can be said about the percentage of salaries that are at least $74,000?
About 97.5 percent
About 84 percent
About 68 percent
About 95 percent
What type of relationship is indicated in the scatterplot?
A positive linear or curvilinear relationship
A negative curvilinear relationship
A negative linear relationship
The study of statistics can be defined as:
the art and science of getting information from data.
All of the answers
the language of data.
the study of collecting, analyzing, presenting, and interpreting data.
In the accompanying stem-and-leaf diagram, the values in the stem and leaf portions represent 10s and 1s digits, respectively.
The stem-and-leaf diagram shows that the distribution is ___________.
None of the answers
Which of the following is most influenced by outliers?
serial correlation is typically observed in:
time series data
n the sample regression equation what is ?
The value of y when x = 0
The predicted value of y, given a specific x value
The slope of the equation
bias can occur in sampling. Bias refers to _____________________.
the use of cluster sampling instead of stratified random sampling
the division of the population into overlapping groups
the tendency of a sample statistic to systematically over-or underestimate a population parameter
the creation of strata, which are proportional to the...