Robin’s scores: 99, 108, 102, 107, 119
Mean = 107; MAD = 5.2
Evelyn’s scores: 125, 137, 138, 145, 145
Mean = 138; MAD = 5.6
Explain what the mean absolute deviation is in general. Explain what the MAD means in the context of Robin and Evelyn’s data.

step-by-step explanation:

2

step-by-step explanation:

(a) {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …}

(b) $59 398

step-by-step explanation:

(a) the annual sequence of profits

aₙ = a₁rⁿ⁻¹

the model for the sequence of profits is {a₁, a₁r, a₁r², … a₁rⁿ⁻¹, …} .

(b) profit after 15 yr

  a₁ = $ 30 000

  r = 1.05

a₁₅ = 30 000 × 1.05¹⁴

a₁₅ = 30 000 × 1.979 93

a₁₅ = $59 398

the profit in year 15 will be $59 398.

the ratios are reciprocals im positive

step-by-step explanation:

they are all positive numbers so it wouldn't be the other ones