Calculations
Histogram Basics
Measures of Central Tendencies
Histogram Details
Biased or Unbiased
100
Given the sample {3,4,5,5,7,8,8,8}: it is the mode.
What is 8?
100
A mark used to check off an item.
What is a tic or tally mark?
100
The middle of the lower half of the data, when arranged from lowest to highest.
What is Q1, or the lower quartile?
100
A description of data that deals with numbers.
What is quantitative data?
100
Some portion of a larger group, selected to represent that group.
What is a sample?
200
Given the sample {3,4,5,6,7}: it is the mean.
What is 5?
200
How often a piece of data occurs.
What is the frequency?
200
Add up all of the values, and divide by the number of values in the list.
What is the mean?
200
A type of description of a histogram that includes symmetry, skewness, or number of peaks.
What is the shape of a histogram?
200
The population is first divided into similar non overlapping groups, then a simple random sample is selected from each group.
What is a stratified random sample?
300
Given the set {2,3,25,29,36,39}: it is the median.
What is 27?
300
Used to represent a break in the values along an axis.
What is a zig-zag?
300
This statistical measure takes the highest value, and subtract the lowest value.
What is the range?
300
When there are no values in an interval of a histogram it is called this.
What is a gap?
300
When all units within a population are included - every single member is included.
What is a census?
400
Given the sample {2,3,5,8,9,12}: the value of Q1.
What is 3?
400
A table in which the frequencies are accumulated for each item.
What is a frequency table?
400
The number that appears the most in a sample.
What is the mode.
400
The description used when a graph has short bars on the left, and tall bars on the right.
What is skewed left?
400
A sample that includes members of a population that are easily accessed (not fair and not random).
What is a convenience sample?
500
Given the set {2,3,5,9,12,13}: the value of Q3.
What is 12?
500
A bar graph in which data are organized into equal intervals.
What is a histogram?
500
A statistical measure that is found by Q3 - Q1.
What is the IQR(Inter Quartile Range)?
500
The way to calculate the variance.
What is squaring the standard deviation.
500
Selecting items for a sample according to a specified time or item interval.
What is systematic random sample?
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