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Question Number 33822 by mondodotto@gmail.com last updated on 25/Apr/18

$$\mathbf{The}\mathbf{following}\mathbf{table}\mathbf{shows}\mathbf{the}$$$$\mathbf{distributuons}\mathbf{of}100\mathbf{families}\mathbf{according}$$$$\mathbf{to}\mathbf{their}\mathbf{expenditure}\mathbf{per}\mathbf{week}.$$$$\mathbf{The}\mathbf{mode}\mathbf{is}\mathbf{given}\mathbf{to}\mathbf{be}24.$$$$\mid \frac{\mathbf{expenditure}}{\mathbf{Number}\mathbf{of}\mathbf{families}}\mid \frac{10-20}{\mathrm{x}}\mid \frac{20-30}{27}\mid \frac{30-40}{\mathbf{y}}\mid \frac{40-50}{15}\mid$$$$\left(\mathbf{a}\right)\mathbf{calculate}\mathbf{the}\mathbf{missing}\mathbf{frequency}$$$$\left(\mathbf{b}\right)\mathbf{calculate}\mathbf{the}\mathbf{mean}$$$$\left(\mathbf{c}\right)\mathbf{calculate}\mathbf{the}\mathbf{median}$$

Commented by math1967 last updated on 25/Apr/18

$$Thereissomeerror.Heremodeis24$$$$\therefore modalclass20-30\therefore x+y<2\times 27$$$$butherex+y=100-42=58>2\times 27$$

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