Data Visualization With Ggplot2 - Study Mode

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[#1] . . . . . . . . function carries out a chi-square test.

(A) chisq.test()

(B) t.test()

(C) prop.test()

(D) fisher.test()

Correct Answer

(A) chisq.test()

[#2] Which of the following adds marginal sums to an existing table?

(A) par()

(B) prop.table()

(C) addmargins()

(D) quantile()

Correct Answer

(B) prop.table()

[#3] Which of the following lists names of variables in a data.frame?

(A) quantile()

(B) names()

(C) barchart()

(D) par()

Correct Answer

(A) quantile()

[#4] Which of the following is tool for chi-square distributions?

(A) pchisq()

(B) chisq()

(C) pnorm

(D) barchart()

Correct Answer

(C) pnorm

[#5] Which of the following groups values of a variable into larger bins?

(A) cut

(B) col.max(x)

(C) stem

(D) which.max(x)

Correct Answer

(A) cut