India · National Testing Agency · pg · unverified source
Computer-based MCQ test used by central and participating universities for MSc Statistics admission.
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Official source: https://exams.nta.ac.in/CUET-PG/
Original questions written to this exam's published syllabus and pattern. Not past papers.
1. Which of these sets is uncountable?
A. The real numbers in (0, 1)
Cantor's diagonal argument shows (0, 1) is uncountable. Q and Z are countable, and finite subsets of N can be listed by size and largest element.
Real Analysis for Statistics · Sets, countability and the real number system
2. Which subset of R³ is a subspace?
B. The plane x + y + z = 0
A subspace must contain 0 and be closed under addition and scaling; x + y + z = 1 misses 0, x ≥ 0 fails under negation, and the union of two axes is not closed under addition.
Linear Algebra & Matrix Theory for Statistics · Vector spaces, subspaces, linear independence, basis and dimension
3. The equation (2xy + 3)dx + (x² + 4y)dy = 0 is exact because:
B. ∂M/∂y = ∂N/∂x = 2x
M = 2xy + 3 gives ∂M/∂y = 2x; N = x² + 4y gives ∂N/∂x = 2x.
Differential Equations, Finite Differences & Numerical Analysis · Ordinary differential equations of first order: exact, linear and Bernoulli equations
4. Which statement describes a genuine limitation of statistics as a science?
D. It studies aggregates and cannot say anything certain about a single individual unit
Statistical laws hold for groups and on average; the mean yield of a variety says nothing certain about one plot. Biological variation is exactly what statistics handles, secondary data are routinely used, and sampling exists precisely to avoid complete enumeration.
Statistical Methods for Agricultural Sciences · Statistics: definition, uses and limitations; frequency distributions and curves
5. Disease severity on wheat leaves is scored 0 to 9 by eye. On which measurement scale are these scores?
D. Ordinal
The scores are ordered (9 is worse than 5) but the gaps between scores are not known to be equal, which is the definition of an ordinal scale. Nominal categories have no order at all.
Exploratory Data Analysis & Statistical Graphics · Types of data and measurement scales
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