Which quantity is taken along the horizontal axis while plotting a less-than…

MATHEMATICS · Single correct · CBSE · Mathematics · Statistics · Statistics

Problem

Which quantity is taken along the horizontal axis while plotting a less-than cumulative frequency curve for grouped data? (a)

\text{Cumulative frequencies}

(b)

\text{Upper class boundaries}

(c)

\text{Lower class boundaries}

(d)

\text{Class marks}