ACT Math Practice Question #1430 (Medium (29)) | Test Citadel
TC
Test Citadel
ACT Math Difficulty: Medium (29)

Digital ACT Math Practice Question #1430

Test your problem-solving accuracy on this official-caliber item. Select an answer choice to check your reasoning instantly.

A dataset of 9 exam scores has a mean of 76. If a tenth student's score of 96 is added to the dataset, what is the new mean of the 10 scores?
Select Your Answer:
Socratic AI Engine Step-by-Step Derivation
0ms Precomputed
⚡ 15-Second Desmos Speed Hack

Original sum = 9(76) = 684. New sum = 684 + 96 = 780. 780/10 = 78.

Masterclass Solution & Distractor Trap Analysis

Original sum = 9 * 76 = 684. New sum = 684 + 96 = 780. New mean = 780 / 10 = 78....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

🔒 Citadel Pro Scholar Vault

Unlock Full Solution & 2,600+ Official Drills

Access detailed Socratic steps, trap breakdowns, authentic timed module simulations, and Desmos speed hacks for just $9.99/mo.

Socratic Assistant

Targeted hints without disclosing final solutions.

I am your Socratic tutor. Click one of the quick guidance buttons above or ask a specific question below about a formula or method.