square units - Answer- squaring equivalent measurements
metric system - Answer- base don multiples of 10
decimal to right or left
length unit - Answer- meter
weight or mass unit - Answer- gram
volume unit - Answer- liter
Mean - Answer- average of the data item
Mode - Answer- most frequently occurring item
Median - Answer- putting data items in order from smallest to largest and then selecting
item in the middle
Range - Answer- measure of variability
subtracting smallest value from the largest value
Bar graph or pictograph - Answer- To contrast data and focus on differences
, line graph - Answer- An axis-type graph in which data points are joined by a line.
circle graph - Answer- total all information that is included on the graph
Scatter plots - Answer- Compare two characteristics of the same group of things or
people and usually consist of a large body of data
Shows how much one variable is affected by another
Correlation - Answer- relationship between two variables
closer data points come to making a straight line when plotted, the closer correlation
stem and leaf plot - Answer- visually similar to line plots
small suited sets of data
stems - Answer- digits in the greatest place value of the data values
leaves - Answer- are the digits in the next greatest place values
Histogram - Answer- summarize information from large sets of data that can be
naturally grouped into intervals
Frequency - Answer- vertical axis indicates
horizontal axis - Answer- indicates data values or ranges of data values
Frequency of the Interval - Answer- the number of data values in any interval
Percentiles - Answer- divide data into 100 equal parts
outperformed all those who took test
Stanine - Answer- scores combine the understandability of percentages with the
properties of the normal curve of probability
divided into nine sections
Quartiles - Answer- divided into four parts.
first median of data set
find the median of the upper
find median of lower
halves of the data set
Error Analysis - Answer- analyzing student errors is to ask how the answer was
obtained
carelessness - Answer- many errors due to this
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