21.4. Statistics
Listed below are statistics keys and functions.
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Symbols/Keys
Buttons min
max
n!
nPr
nCr
length
sum
avg
median
mode
var
stdev
cov
corr
varp
stdevp
covp
corrp
mean
quantile(A, .25)
quantile(A, 0.5)
quantile(A, 0.75)
quantile(A, 0.1)
quantile(A, 0.2)
quantile(A, 0.3)
quantile(A, 0.4)
quantile(A, 0.5)
quantile(A, 0.6)
quantile(A, 0.7)
quantile(A, 0.8)
quantile(A, 0.9)
quantile(A, 0.01)
quantile(A, 0.02)
quantile(A, k)
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Meaning/Functions
Uses/Codes Summation Notation key (found under the Greek keyboard)
Product Notation key (found under the Greek keyboard) Minimum (used to find the least value in a data set)
Maximum (used to find the largest value in a data set)
Factorial of a number (used to find the number of ordered arrangements of n objects taken r = n at a time with no repetitions
Permutations key (used to find the number of ordered arrangements of n objects taken r at a time with no repetitions)
Combinations key (use to find the number of selections of n objects taken r at a time with no repetitions (order doesn't matter)
Cardinality of a set - number of elements in a set
Used to find the sum of the elements in a set
Used to find the average of a data set
Median (middle value of an ordered data set)
Mode (most frequent value in a data set)
Variance of a sample data set
Standard deviation of a sample data set
Covariance of a paired sample data set
Correlation coefficient (least square regression coefficient of a paired sample data set
Covariance of a paired population data set
Correlation coefficient (population data sets)
Arithmetic mean or average
First quartile (where A is the name of a matrix)
Second quartile (median, 5th decile, or 50th percentile)
kth percentile (k – decimal equivalent to the given percentile rank)
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