Question

question a teacher put all her students quiz scores up on the dot plot below. quiz scores what was the mean quiz score? answer attempt 1 out of 2 points

Explanation:

Step1: Count number of scores

1 + 3+ 3+ 7+ 1+ 3+ 2+ 5+ 1 = 26

Step2: Calculate sum of scores

(60×1)+(65×3)+(70×3)+(75×7)+(80×1)+(85×3)+(90×2)+(95×5)+(100×1)= 1980

Step3: Calculate mean

$\frac{1980}{26}\approx76.15$

Answer:

76.15