vocabulary review · web viewa number that describes the middle or center of the data. examples:...
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V O C A B U L A R Y Unit 6: Statistics Term What does it
mean?What does it look like?
FrequencyThe number of times a value appears in a set of data.
See the counts in the table below? 10, 8, 7 and 9 shows the frequency certain ages were found in a data set.
Frequency Table
Lists the number of times that a piece of data occurs in a set. For sets of data with a large spread the frequency is often grouped into equal intervals.
Ages of Camp Members0-3 104-7 8
8-11 712-15 9
Dot Plot (Line Plot)
A display of data that is along a number line with points, or symbols, indicating the frequency of information about a single question or category.
Histogram
A type of bar graph used to display numerical data grouped in equal intervals. It shows the number of data items that occur within each interval.
Stem-and-Leaf Plot
Organizes numerical data by place value.
Box-and-Whisker Plot
(box plot)
A diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values (Five Number Summary.)
Interquartile Range (IQR)
The difference between the upper and lower quartiles. It indicates the spread of the middle 50% of the data.
Measures of Spread
A number that indicates the variability of the data. Ex. Range, IQR, MAD.
RangeThe difference between the highest and lowest values in a set of data.
Measures of Center
A number that describes the middle or center of the data. Examples: mean, median, mode.
MedianThe middle number when a set of data is arranged in order.
Ex. Order the values from least to greatest. Locate the middle value.
4, 5, 5, 5, 6, 7, 8, 8, 8 Median=6---------------------------------------------------------------------------------------------------------
For two middle values, find the average of the two values.4, 5, 5, 5, 6, 7, 8, 8 Median= 5.5
Mean
The “average” of a set of data, found by adding all pieces of data and dividing by the number of data items.
Ex. 4, 5, 5, 5, 6, 7, 8, 84+5+5+5+6+7+8+8= 48
48 ÷ 8 = 6Mean = 6
Mode The number that occurs the most in a set of data.
Ex. 4, 5, 5, 5, 6, 7, 8, 8
The mode is 5.
Mean Absolute Deviation (MAD)
The average distance of all data points from the mean.
Ex. 10, 5, 12The mean is (10+5+12)/3= 9.
10-9 = 1 9-5= 4 12-9= 3
The MAD is (1+4+3)/3= ~2.7
Outlier
A value that is far away from most other values in a data set. The value is much higher or much lower than the rest of the data values.
Ex. 10, 12, 10, 12, 13, 15, 16, 99
In this set of data, “99” might be an outlier.
A question that generates a _____________ of ________________ is called a statistical question. A statistical question requires ___________________ to answer it.
Examples:
V O C A B U L A R Y Unit 6: Statistics Term What does it mean? What does it look like?
The number of times a value appears in a set of data.
See the counts in the table below? 10, 8, 7 and 9 shows the frequency certain ages were found in a data set.
Lists the number of times that a piece of data occurs in a set. For sets of data with a large spread the frequency is often grouped into equal intervals.
Ages of Camp Members0-3 104-7 88-11 7
12-15 9
A display of data that is along a number line with points, or symbols, indicating the frequency of information about a single question or category.
A type of bar graph used to display numerical data grouped in equal intervals. It shows the number of data items that occur within each interval.
Organizes numerical data by place value.
A diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values (Five Number Summary.)
The difference between the upper and lower quartiles. It indicates the spread of the middle 50% of the data.
A number that indicates the variability of the data. Ex. Range, IQR, MAD.
The difference between the highest and lowest values in a set of data.
A number that describes the middle or center of the data. Examples: mean, median, mode.
The middle number when a set of data is arranged in order.
Ex. Order the values from least to greatest. Locate the middle value.
4, 5, 5, 5, 6, 7, 8, 8, 8 Median=6---------------------------------------------------------------------------------------------------------
For two middle values, find the average of the two values.
4, 5, 5, 5, 6, 7, 8, 8 Median= 5.5
The “average” of a set of data, found by adding all pieces of data and dividing by the number of data items.
Ex. 4, 5, 5, 5, 6, 7, 8, 84+5+5+5+6+7+8+8= 48
48 ÷ 8 = 6Mean = 6
The number that occurs the most in a set of data.
Ex. 4, 5, 5, 5, 6, 7, 8, 8
The mode is 5.
The average distance of all data points from the mean.
Ex. 10, 5, 12The mean is (10+5+12)/3= 9.
10-9 = 1 9-5= 4 12-9= 3
The MAD is (1+4+3)/3= ~2.7A value that is far away from most other values in a data set. The values is much higher or much lower than the rest of the data values.
Ex. 10, 12, 10, 12, 13, 15, 16, 99
In this set of data, “99” might be an outlier.
A question that generates a _____________ of ________________ is called a statistical question. A statistical question requires ___________________ to answer it.
Examples:
V O C A B U L A R Y Unit 6: Statistics Term What does it mean? What does it look like?
Frequency The number of times a value appears in a set of data.
Frequency Table
Lists the number of times that a piece of data occurs in a set. For sets of data with a large spread the frequency is often grouped into equal intervals.
Dot Plot (Line Plot)
A display of data that is along a number line with points, or symbols, indicating the frequency of information about a single question or category.
Histogram
A type of bar graph used to display numerical data grouped in equal intervals. It shows the number of data items that occur within each interval.
Stem-and-Leaf Plot Organizes numerical data by place value.
Box-and-Whisker Plot (box plot)
A diagram that summarizes data using the median, the upper and lower quartiles, and the extreme values (Five Number Summary.)
Interquartile Range (IQR)
The difference between the upper and lower quartiles. It indicates the spread of the middle 50% of the data.
Measures of SpreadA number that indicates the variability of the data. Ex. Range, IQR, MAD.
Range The difference between the highest and lowest values in a set of data.
Measures of CenterA number that describes the middle or center of the data. Examples: mean, median, mode.
Median The middle number when a set of data is arranged in order.
MeanThe “average” of a set of data, found by adding all pieces of data and dividing by the number of data items.
Mode The number that occurs the most in a set of data.
Mean Absolute Deviation (MAD)
The average distance of all data points from the mean.
Outlier
A value that is far away from most other values in a data set. The values is much higher or much lower than the rest of the data values.
A question that generates a _____________ of ________________ is called a statistical question. A statistical question requires ___________________ to answer it.
Examples:
V O C A B U L A R Y Unit 6: Statistics Term What does it mean? What does it look like?
Frequency
See the counts in the table below? 10, 8, 7 and 9 shows the
frequency certain ages were found in a data set.
Frequency Table
Ages of Camp Members0-3 104-7 88-11 7
12-15 9
Dot Plot (Line Plot)
Histogram
Stem-and-Leaf Plot
Box-and-Whisker Plot (box plot)
Interquartile Range (IQR)
Measures of Spread
Range
Measures of Center
Median
Ex. Order the values from least to greatest. Locate the middle value.
4, 5, 5, 5, 6, 7, 8, 8, 8 Median=6---------------------------------------------------------------------------------------------------------
For two middle values, find the average of the two values.
4, 5, 5, 5, 6, 7, 8, 8 Median= 5.5
Mean
Ex. 4, 5, 5, 5, 6, 7, 8, 84+5+5+5+6+7+8+8= 48
48 ÷ 8 = 6Mean = 6
ModeEx. 4, 5, 5, 5, 6, 7, 8, 8
The mode is 5.
Outlier
Ex. 10, 12, 10, 12, 13, 15, 16, 99
In this set of data, “99” might be an outlier.
A question that generates a ____________ of ____________is called a statistical question.
Example: ________________________________ Non-Example: _______________________________
The two types of data are: ____________________ and ____________________________
Examples: