Mathematics · Statistics - Averages
Group 1 has n1 = 40 observations with mean x̄1 = 30. Group 2 has n2 = 60 observations with mean x̄2 = 50. What is the combined mean?
- 145
- 238
- 342✓
- 440
Correct answer
42
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Preparing for Mathematics?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Want more practice questions on Statistics - Averages?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Mathematics · Statistics - Averages