College Prep Math – Chp. 3 Study guide
Data Description
Sec 3-2
Measures of Central Tendency
Key Terms-
Statistic
Parameter
Mean (make sure to note the formula, all of the symbols, and how to round)
Median
Mode (unimodal, bimodal, multimodal)
Modal Class
Midrange
Weighted Mean
Students should be able to:
-calculate the mean, median, mode, and midrange from a set of data
-calculate the mean, modal class, and median interval from grouped data (frequency table)
-calculate a weighted mean
-determine if mean, median, or mode would be the best measure of central tendency for a given situation
Assignment 3-2
p. 116
#1-8, 11
p. 117-118
# 12-15, 26-30
p. 118-119
# 19-21, 31, 33, 39
Worksheet 3.2
Sec 3-3
Measures of Validation
Key Terms-
Range
Variance (know the process, the formula, and each part of the formula)
Standard Deviation (know the process, the formula, and each part of the formula)
Sample Variance
Sample Standard Deviation
Shortcut Formulas for Sample Variance and Sample Standard Deviation
Sample Variance and Sample Standard Deviation for Grouped Data
Students should be able to:
-calculate the range from a data set
-use the mean to calculate the deviations of a data set
-calculate the variance and standard deviation for a sample, a population, and for grouped data
-understand and interpret what the standard deviation means about a data set
Assignment 3-3
p. 135
# 1-4, 7-9
p. 135-136
# 10, 11, 18, 20
Quiz 3-2 to 3-3
Sec 3-4
Measures of Position
Key Terms-
Standard Score (Z-Score) for Populations and for Samples
Percentiles and Percentile Formula
Quartiles
Deciles
Interquartile Range (IQR)
Outliers
Students should be able to:
-find a standard score for a given value
-compare 2 standard scores and determine which one has a better relative position
-compute a percentile score for a given value
-compute quartile and decile scores
-calculate the IQR and use it to determine if there are any outliers in a data set
Assignment 3-4
p. 150-152
# 1-15, 24, 28, 31
Sec 3-5
Exploratory Data Analysis
Key Terms-
Five number summary
Boxplot
Students should be able to:
-determine the 5 number summary from a set of data
-use the 5 number summary to construct a boxplot for the data set
-identify the 5 number summary from a given boxplot
Assignment 2-5
p. 163
# 7-10, 13-16
Quiz 3-4 to 3-5
Chp 3 Review Assignments
p. 172-173
# 1-23, 25, 27, 31, 33, 35
Chp 3 Test