alleryఒక పరీక్షలో 70 (వెయిటేజీ 1) మరియు 85 (వెయిటేజీ 2) మార్కులు ఉన్నాయి. వాటి భారిత సగటు ఎంత?
A78
B82
C80
D77.5
Answer & Solution
Correct answer: C. 80
భారిత మొత్తం 70 + 170 = 240, మరియు 240 ని 3 చే భాగించగా 80 వస్తుంది.
Keep practising Elementary Statistics
Browse all Elementary Statistics questions for RRB NTPC, or explore more Mathematics topics.
Related questions
RRB NTPC · Central Tendency MeasuresRRB NTPC · Calculate Mean of DataA fair coin lands tails five times in a row. The chance of tails on the next toss isA fair coin is tossed ten times. The chance of ten heads in a row is aboutHow is the median of 8 ordered values found?The data 5, 7, 9, 11, 13 are in arithmetic progression. Their median is?How many modes does the data 1, 1, 2, 4, 4 have?Why is the median preferred for skewed incomes?