Q74.Let the mean and variance of 8 numbers x, y, 10, 12, 6, 12, 4, 8 be 9 and 9. 25 respectively. If x > y, then 3x −2y is equal to _______
What This Question Tests
This question involves setting up and solving a system of equations using the given mean and variance of a dataset to find unknown values.
Concepts Tested
Formulas Used
Mean = (Σxi)/n
Variance = (Σxi²)/n - (Mean)²
📚 NCERT Sections This Tests
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13.2 Obtain the binding energy of the nuclei 5626Fe and 20983 Bi in units of MeV from the following data: m ( 5626Fe ) = 55.934939 u m ( 20983 Bi ) = 208.980388 u
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📋 Question Details
- Chapter
- Statistics
- Topic
- Mean and Variance of Data
- Year
- 2023
- Shift
- 08 Apr Shift 1
- Q Number
- Q74
- Type
- Numerical
- NCERT Ref
- Class 11 Mathematics Ch 15: Statistics
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