\[Sum]
(Mathematica Character Name) Unicode: 2211. Alias: Esc sum Esc. Compound operator with built-in evaluation rules. ∑_(i)^i_max(f) is by default interpreted as Sum[f,{i,i_max}]. ∑_(i=i_min)^i_max(f)f is by ...
AppearanceElements is an option for functions like Manipulate that specifies what elements should be included in the displayed form of the object generated.
ExcludePods is an option to WolframAlpha that specifies pod IDs to exclude from the results.
IncludePods is an option for WolframAlpha that determines specific pod IDs to include in the results.
PodWidth is an option for WolframAlpha that determines the width parameters of the content returned by the Wolfram|Alpha API.
I
(Built-in Mathematica Symbol) I represents the imaginary unit Sqrt[-1].
Interpolation[{f_1, f_2, ...}] constructs an interpolation of the function values f_i, assumed to correspond to x values 1, 2, ... . Interpolation[{{x_1, f_1}, {x_2, f_2}, ...
Probability[pred, x \[Distributed] dist] gives the probability for an event that satisfies the predicate pred under the assumption that x follows the probability distribution ...
LogitModelFit[{y_1, y_2, ...}, {f_1, f_2, ...}, x] constructs a binomial logistic regression model of the form 1/(1 + E -(\[Beta]_0 + \[Beta]_1 f_1 + \[Beta]_2 f_2 + \ ...)) ...
ProbitModelFit[{y_1, y_2, ...}, {f_1, f_2, ...}, x] constructs a binomial probit regression model of the form 1/2 (1 + erf((\[Beta]_0 + \[Beta]_1 f_1 + \[Beta]_2 f_2 + \ ...