Data Analysis & Analyzing Categorical Data
Displaying Quantitative Data with Graphs
Describing Quantitative Data with Numbers
Categorical vs. Quantitative
1.1-1.3
100
What is the process of data analysis?
the process of organizing, displaying, summarizing, and asking questions about data
100
What does it mean to be Approximately Symmetric?
a description of a distribution where all values have frequencies that are almost equal.
100
Wht is standerd devation?
The square root of the variance. The standard deviation sx measures the typical distance of the values in a distribution from the mean.
100
What is Categorical?
Categorical variables places individuals in various categories.
100
What is the four step process?
Sate, Plan, Do,Conclude.
200
What is the meaning of association?
between two variables if it is possible to anticipate the value of one by knowing the value of the other. There is no relationship if knowing the value of one does not help in predicting the value of the other.
200
What is the diffrence between mean and median?
Median is the midpoint and Mean is the average of everyone in the data set.
200
What data table is the five number summary used for?
A boxplot.
200
What is Quantitative?
Quantitative variables take on numerical values for which mathematical operations can be done one.
200
What is the difference between unimodal and bimodal?
unimodal only has one peak and bimodal has two peaks.
300
What is conditional distribution?
A variable expresses how that variable is valued among people who have a certain value for another variable.
300
What does S.O.C.S stand for
Shape, Outlier, Center and Spread.
300
What is the 1.5 x IQR rule?
It tells us if a number on the data set is a outlier or not.
300
What is conditional distribution?
conditional distribution is the distribution of one variable given something true about the other variable.
300
What is conditional distribution usually expressed as?
Fractions and Percents.
400
What is Marginal distribution?
The distribution of values of that across all the persons that the table describes is one of the categorical variables in a two-way table of counts.
400
What where the three major graphs learned in this unit?
Dotplot, Histograph, And Stemplot.
400
What is the five number summary?
The five-number summary of a distribution consists of the smallest observation, the first quartile, the median, the third quartile, and the largest observation,
400
What do you use to display Categorical Data?
You use pie charts and Bar charts.
400
What type of graph is this
Mosaic Plot
500
what is a Relative Frequency Table?
displays the percentages relative frequencies of observations for every class or group.
500
How does each graph display the data?
Dotplot is shows a dot above it value on a number line. Histograph A graph that shows the frequencies or relative frequencies of each interval of values as a bar. Stemplot a graph where each data value is divided into two sections: the final digit and the stem, which includes all other data values except the final one.
500
How do you measure for the IQR.
IQR=Q3-Q1
500
What graphs can you use to display Quantitative data?
Dot plots, Stem Plots, Histogram.
500
True or False
The median is always greater then the mean?
False