Math Problem Statement
The grades for 30 students on the most recent exam are given in the data table below: Round your answer to 2 decimal places as needed 70 90 70 60 90 60 90 70 80 60 90 70 90 60 90 80 70 90 90 90 90 70 70 90 90 80 80 80 80 90 What is the mean score for the exam? What is the median score for the exam? What is the standard deviation for the exam?
Solution
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Math Problem Analysis
Mathematical Concepts
Descriptive Statistics
Mean
Median
Standard Deviation
Formulas
Mean = (Σx) / N
Median: Middle value of ordered data set
Standard Deviation: sqrt((Σ(x - μ)^2) / N)
Theorems
Measures of Central Tendency
Measure of Dispersion
Suitable Grade Level
Grades 9-12
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