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3 cards
Skewness and the Mean, Median, and Mode
#1. A distribution of this type is called skewed to the left because it is pulled out to the left. #2. The histogram displays a symmetrical distribution of data. #3. A distribution of this type is c...
kbenien

3 years ago

±0

7
views
12 cards
Experimental Design and Ethics
#1. Explanatory Variable  the independent variable in an experiment; the value controlled by researchers #2. Treatments  different values or components of the explanatory variable applied in an ...
kbenien

3 years ago

±0

4
views
6 cards
Measures of the Spread of the Data
...deviation #5. Formulas for the population standard deviation #6. sampling variability of a
statistic
 How much the
statistic
varies from one sample to another...
kbenien

3 years ago

±0

11
views
8 cards
Frequency, Frequency Tables, and Levels of Measurement
...interval scale data, but it has a 0 point and can be calculated. For example, four multiple choice
statistics
final exam scores are 80, 68, 20 and 92 (out of a possible 100 points). The exams are machinegraded...
kbenien

3 years ago

±0

23
views
15 cards
Data, Sampling, and Variation in Data and Sampling
#1. Cluster Sampling  a method for selecting a random sample and dividing the population into groups (clusters); use simple random sampling to select a set of clusters. Every individual in the c...
kbenien

3 years ago

±0

18
views
10 cards
Measures of the Center of the Data
#1. Frequency Table  a data representation in which grouped data is displayed along with the corresponding frequencies #2. Mean  a number that measures the central tendency of the data; a common...
kbenien

3 years ago

±0

13
views
12 cards
Measures of the Location of the Data
#1. Interquartile Range  or IQR, is the range of the middle 50% of the data values; the IQR is found by subtracting the first quartile from the third quartile. It is the difference between the ...
kbenien

3 years ago

±0

4
views
7 cards
Box plots
#1. Box plot  a graph that gives a quick picture of the middle 50% of the data #2. First Quartile  the value that is the median of the of the lower half of the ordered data set #3. Frequency Pol...
kbenien

3 years ago

±0

7
views
5 cards
StemandLeaf Graphs (Stemplots), Line Graphs, and Bar Graphs
#1. stemandleaf graph or stemplot  comes from the field of exploratory data analysis. It is a good choice when the data sets are small. #2. outlier  an observation of data that does not fit th...
kbenien

3 years ago

±0

20
views
6 cards
Histograms, Frequency Polygons, and Time Series Graphs
#1. Frequency  the number of times a value of the data occurs #2. Histogram  a graphical representation in xy form of the distribution of data in a data set; x represents the data and y repre...
kbenien

3 years ago

±0

68
views
15 cards
1.1 Definitions of
Statistics
, Probability, and Key Terms
...population studied #13.
Statistic
 a numerical characteristic of the sample; a
statistic
estimates the corresponding...#1. science of
statistics
 deals with the collection, analysis, interpretation, and presentation ...
kbenien

3 years ago

±0

33
views