The Following Table Gives the Scores of 30 Students in a Mathematics

question 103

Essay

The following table gives the scores of 30 students in a mathematics examination. Find the mean and the standard deviation of the distribution of the given data. Round the answers to the nearest hundredth, if necessary.
Hint: Assume that all scores lying within a group interval take the midvalue of that group. __________ __________

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Definitions:

Owner's Equity

The residual interest in the assets of a business after deducting liabilities, representing the owner's claim on the company's resources.

Non-posting Account

An account used in bookkeeping for recording transactions that will not affect the financial statements until a later transaction completes the process.

Purchase Orders Account

This refers to a specific ledger or account setup within an accounting system to track purchase orders issued to suppliers.

Income Statement

A financial statement that summarizes a company's revenues and expenses over a specific period, highlighting the net profit or loss.