Bihar TET · Mathematics and Science (Paper II)
Mean, median, mode and elementary probability.
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Q1 · Statistics and Probability · EASY
The marks obtained by 7 students in a mathematics test are: 12, 15, 18, 20, 15, 22, 15. What is the mode of this data?
Q2 · Statistics and Probability · EASY
A bag contains 5 red balls, 3 blue balls and 2 green balls. If one ball is drawn at random from the bag, what is the probability that it is a blue ball?
Q3 · Statistics and Probability · MEDIUM
The mean of five numbers is 24. If one more number 36 is added to this data, what will be the new mean?
Q4 · Statistics and Probability · MEDIUM
The following data shows the ages of 9 students: 11, 12, 13, 11, 14, 12, 13, 12, 15. Find the median age.
Q5 · Statistics and Probability · MEDIUM
The mean of five numbers 8, 12, 15, 10, and 20 is: