Texas Instruments TI-Nspire - Page 229

Using Lists & Spreadsheet 217
• population standard deviation, s
• sample size, n
•X-min
• first quartile, Q
1
•median
• third quartile, Q
3
•X-max
• sum of squared deviations, SSx =
Each element in freqlist is the frequency of occurrence for each
corresponding data point in Xlistname. freqlist elements must be
integers > 0.
Two-Variable Statistics (TwoVar)
The Two-Variable Statistics calculation analyzes paired data. List 1 is the
independent variable. List 2 is the dependent variable. The statistical
data returned for the data sets using this analysis technique are:
For each list:
• sample mean, or
• sum of the data, or
• sum of the squared data, or
• sample standard deviation, sx = s
n-1
x or sy = s
n-1
y
• population standard deviation, sx = s
n
x or sy = s
n
y
•X-min or Y-min
• first quartile, Q
1
X or Q
1
Y
•median
• third quartile, Q
3
X or Q
3
Y
•X-max or Y-max
• sum of squared deviations, SSx = or SSy =
Additional data:
• sample size for each data set, n
•
x
Σ xx–()
2
x y
Σx Σy
Σx
2
Σy
2
Σ xx–()
2
Σ yy–()
2
Σxy