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Question

Find the median and the mode of the following data:

2, 3, 5, 7, 2, 3, 3, 5, 7 and 9.

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
4, 3

Data Set Analysis

The given data set is: 2, 3, 5, 7, 2, 3, 3, 5, 7, 9.

Median Calculation

To find the median, first arrange the data in ascending order:

2, 2, 3, 3, 3, 5, 5, 7, 7, 9

There are 10 data points (an even number). The median is the average of the two middle values.

The middle positions are the 5th and 6th values in the sorted list.

5th value = 3

6th value = 5

Median = $\frac{3 + 5}{2} = \frac{8}{2} = 4$

Mode Determination

The mode is the value that appears most frequently in the data set.

Count the frequency of each number:

  • 2 appears 2 times
  • 3 appears 3 times
  • 5 appears 2 times
  • 7 appears 2 times
  • 9 appears 1 time

The number 3 appears most often (3 times).

Therefore, the Mode = 3.

Results Summary

The calculated Median is 4.

The calculated Mode is 3.

The final answer is Median = 4 and Mode = 3.

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Similar Questions

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Important Questions from Elementary Statistics

  1. Demand for seats in a university is at its highest in the fall; demand also trends to grow and fall off in 25 year waves. In time service forecasting, the former demand characteristic would be called ______ and the latter would be called _______.

  2. The system of combining two or more overlapping series of index numbers to obtain a single continuous series is called

  3. The rise in the number of patients due to heatstroke is an example of:

  4. According to government data, 24 percent of teenagers in India under the age of 18 years live in households with incomes that are classified at a particular income level. A simple random sample of 400 teenagers in India under the age of 18 years was selected for a study of learning. If the government data is correct, which of the following best approximates the probability that at least 27 per cent of the teenagers in the sample live in households that are classified at a particular income level?

  5. Which index satisfies the factor reversal test?

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