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