Core stretch Completion times are grouped, in order around the pie chart, into $0

Question

Core stretch Completion times are grouped, in order around the pie chart, into $0<t\le10$, $10<t\le20$, $20<t\le30$, $30<t\le40$, $40<t\le50$ minutes. Their sector angles in that same order are $2x^\circ,x^\circ,(x-12)^\circ,144^\circ,(x+8)^\circ$. The $144^\circ$ sector represents 36 participants. $2x$ $x$ $x-12$ $144^\circ$ $x+8$

Accepted Answer

(a)(i) $90$ (ii) $8$ (b)(i) interval frequencies $22,11,8,36,13$ (ii) bars on 0–10, 10–20, 20–30, 30–40, 40–50 at those heights (iii) it preserves ordered adjacent intervals and distribution shape.

From algebraic pie sectors to a histogram

From algebraic pie sectors to a histogram

Solution:

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