AP Stats Calculator Commands Review

Flashcards for TI-84 calculator commands in AP Statistics.

1-Var Stats

Calculates mean, standard deviation, sample size, and 5-number summary.

normalcdf

Calculates the area under the standard normal distribution curve between specified bounds.

tcdf

Calculates the area under the t-distribution curve.

c2-cdf

Calculates the area in the tail of the chi-square distribution.

invNorm

Finds the z-score corresponding to a given area in the tail.

invT

Finds the t-score corresponding to a given area in the tail.

LinReg(a+bx)

Calculates the linear regression equation (slope and y-intercept), correlation coefficient (r), and coefficient of determination (r^2).

DiagnosticOn

Toggles the display of the correlation coefficient (r) and the coefficient of determination (r^2) in the LinReg output.

Scatterplot and Regression Line

Graphs a scatterplot of the data and the regression line.

Residual Plots

Graphs a residual plot to assess the fit of the linear regression model.

Normal Probability Plot

Graphs a normal probability plot to assess the normality of the data.

binompdf(n, p, x)

Calculates the probability of exactly x successes in n trials of a binomial distribution.

binomcdf(n, p, x)

Calculates the cumulative probability of x or fewer successes in n trials of a binomial distribution.

geometpdf (p, n)

Calculates the probability that the first success occurs on the nth trial in a geometric distribution.

geometcdf (p, n)

Calculates the cumulative probability that the first success occurs on or before the nth trial in a geometric distribution.

1-PropZInt

Calculates a confidence interval for a single proportion.

2-PropZInt

Calculates a confidence interval for the difference between two proportions.

1-PropZTest

Performs a hypothesis test for a single proportion.

2-PropZTest

Performs a hypothesis test for the difference between two proportions.

TInterval

Calculates a confidence interval for a single mean, using a t-distribution.

T-Test

Performs a hypothesis test for a single mean, using a t-distribution.

X2GOF-Test

Performs a Chi-Square Goodness of Fit Test.

X2 -Test (Homogeneity)

Performs a Chi-Square Test for Homogeneity.

X2 -Test (Independence)

Performs a Chi-Square Test for Independence.

LinRegTInt

Calculates a confidence interval for the slope of the regression line.

LinRegTTest

Performs a hypothesis test for the slope of the regression line.