WGU C784-STATISTICS MOD 4 EXAM
QUESTIONS WITH COMPLETE
SOLUTIONS
Define Mode - ANSWERSThe value that occurs most often in a data set
The Mean of a data set represents the? - ANSWERSAverage
Median of a data set - ANSWERSThe middle value of the data set
What are the two types of variables - ANSWERS1) Quantitative Variable 2) Categorical
Variable
Stem Plot (or Stem and Leaf Plot) - Best to display the distribution or shape of data
according to place values. Keeps information about individual data points.
Box Plot - Best to display the center, spread, and outliers of a given data set.
Histogram - Best to display the distribution (shape and spread) of quantitative data.
Works well with large data sets.
A stem plot is constructed by separating each data value into a stem and a leaf. The
leaf is the __________ most digit, and the stem consists of all of the digits to the
__________ of the leaf. - ANSWERSA stem plot is constructed by separating each data
value into a stem and a leaf. The leaf is the right most digit, and the stem consists of all
of the digits to the left of the leaf.
Note: Represent each number that is in the ones place from the list of numbers. By
doing this the stems will consist of ones, twos, threes, and fours. Next list the leafs by
taking the digit to the right and writing it within the coloumn/stem that matches the ones
place holder of the number. Example 31 the ones place/ stem is "3" the Leaf which is to
the right of the number is "1".
Quantitative variable - ANSWERSQuantitative variable - a variable that takes a
numerical value that can be counted or measured.
Examples: height, weight, age, cholesterol level, exam scores
Categorical variable - ANSWERSCategorical variable - a variable that is not measured;
it is a "category" or a label; it places the individual in a certain group.
Examples: gender, months of the year, zip codes
List Two Graphical Displays for Categorical Data - ANSWERS1) Pie Charts 2) Bar
Charts
QUESTIONS WITH COMPLETE
SOLUTIONS
Define Mode - ANSWERSThe value that occurs most often in a data set
The Mean of a data set represents the? - ANSWERSAverage
Median of a data set - ANSWERSThe middle value of the data set
What are the two types of variables - ANSWERS1) Quantitative Variable 2) Categorical
Variable
Stem Plot (or Stem and Leaf Plot) - Best to display the distribution or shape of data
according to place values. Keeps information about individual data points.
Box Plot - Best to display the center, spread, and outliers of a given data set.
Histogram - Best to display the distribution (shape and spread) of quantitative data.
Works well with large data sets.
A stem plot is constructed by separating each data value into a stem and a leaf. The
leaf is the __________ most digit, and the stem consists of all of the digits to the
__________ of the leaf. - ANSWERSA stem plot is constructed by separating each data
value into a stem and a leaf. The leaf is the right most digit, and the stem consists of all
of the digits to the left of the leaf.
Note: Represent each number that is in the ones place from the list of numbers. By
doing this the stems will consist of ones, twos, threes, and fours. Next list the leafs by
taking the digit to the right and writing it within the coloumn/stem that matches the ones
place holder of the number. Example 31 the ones place/ stem is "3" the Leaf which is to
the right of the number is "1".
Quantitative variable - ANSWERSQuantitative variable - a variable that takes a
numerical value that can be counted or measured.
Examples: height, weight, age, cholesterol level, exam scores
Categorical variable - ANSWERSCategorical variable - a variable that is not measured;
it is a "category" or a label; it places the individual in a certain group.
Examples: gender, months of the year, zip codes
List Two Graphical Displays for Categorical Data - ANSWERS1) Pie Charts 2) Bar
Charts
