MCQs

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Overall MCQs for Reference

What does the mode represent in a dataset?
a. The smallest value
b. The mid-point value
c. The average value
d. The most common value
Answer: d. The most common valuew3schools+2
Which measure is most suitable for identifying the most popular item in a categorical dataset?
a. Mean
b. Range
c. Mode
d. Variance
Answer: c. Modestudyopedia+2
For the dataset, what is the mode?tutorialspoint+3
a. 2
b. 4
c. 7
d. 9
Answer: b. 4geeksforgeeks+1
If a dataset has no repeating values, what can be said about the mode?
a. It is undefined
b. It is the mean
c. It is the median
d. It is the largest value
Answer: a. It is undefinedinvestopedia+2
In which scenario is mode most frequently used in machine learning?
a. Continuous numerical prediction
b. Categorical classification
c. Linear regression
d. Dimensionality reduction
Answer: b. Categorical classificationthinkingneuron+1
What is the mode for the dataset ?geeksforgeeks+3
a. 2
b. 5
c. 9
d. 12
Answer: c. 9tutorialspoint+2
A dataset with two modes is called:
a. Multimodal
b. Bimodal
c. Unimodal
d. Non-modal
Answer: b. Bimodalbyjus+1
Which library method in Python can you use to calculate the mode?
a. mode() in SciPy
b. mean() in NumPy
c. median() in Pandas
d. sum() in Math
Answer: a. mode() in SciPystudyopedia+1
Real estate analysts use mode to determine:
a. The cheapest house
b. The most common house price bracket
c. The most expensive house
d. The average number of rooms
Answer: b. The most common house price bracketembibe+2
What is the mode for ?geeksforgeeks+4
a. 1
b. 2
c. No mode
d. 5
Answer: c. No modewikipedia+2
The relation between mean, median, and mode is often expressed as:
a. Mode = Mean + Median
b. 3Median – 2Mean = Mode
c. Mean = Mode + Median
d. Mode = Median / Mean
Answer: b. 3Median – 2Mean = Modeembibe
In a dataset where the mode is 7, what does this imply?
a. 7 occurs least frequently
b. 7 occurs most frequently
c. 7 is the midpoint
d. None of the above
Answer: b. 7 occurs most frequentlypickl+2
Why is mode preferred over mean and median for categorical data?
a. Mean and median are not defined for categories
b. Mode is always the smallest value
c. Mode measures dispersion
d. Mode predicts variance
Answer: a. Mean and median are not defined for categoriesaigents+1
Which distribution’s mean, median, and mode coincide?
a. Skewed left
b. Normal
c. Uniform
d. Binomial
Answer: b. Normalinvestopedia+1
For grouped data, which value does mode approximate?
a. The midpoint interval
b. The highest frequency class
c. The lowest frequency class
d. The outlier interval
Answer: b. The highest frequency classgeeksforgeeks+2
What is a disadvantage of mode?
a. It is heavily affected by outliers
b. It ignores data frequency
c. It is undefined when no value repeats
d. It requires sorted data
Answer: c. It is undefined when no value repeatswikipedia+1
Mode is valuable for imputation in missing values when the variable is:
a. Binary or categorical
b. Continuous only
c. Large scale only
d. Boolean only
Answer: a. Binary or categoricalcorporatefinanceinstitute+2
In Python, Pandas DataFrame’s mode method returns:
a. The mean
b. The most common value(s)
c. The least common value
d. The sum
Answer: b. The most common value(s)simplilearn+1
In public transportation analysis, mode helps identify:
a. Bus speeds
b. Most crowded times
c. Ticket prices
d. Average delays
Answer: b. Most crowded timesgeeksforgeeks
Which central tendency measure is least impacted by extremes?
a. Mean
b. Median
c. Mode
d. Range
Answer: c. Modecorporatefinanceinstitute+1
What type of data is mode best suited for?
a. Interval
b. Categorical
c. Ratio
d. Temporal
Answer: b. Categoricalthinkingneuron+1
If every value in a dataset is unique, what happens to the mode?
a. It is the average
b. It is all values
c. It doesn’t exist
d. It’s the largest
Answer: c. It doesn’t existinvestopedia+1
What is the modal class in grouped frequency distributions?
a. Class with smallest frequency
b. Class with largest frequency
c. Class with mid-point value
d. Class before outliers
Answer: b. Class with largest frequencybyjus+1
The SciPy library’s mode function handles:
a. Multi-dimensional arrays
b. Only single lists
c. Only text
d. Only binary data
Answer: a. Multi-dimensional arraystutorialspoint
For, how many modes does the dataset have?geeksforgeeks+2
a. Zero
b. Two
c. Three
d. One
Answer: b. Twotutorialspoint+1
What is the mode for the set ?scielo+1
a. 7
b. 8
c. Both 7 and 8
d. None
Answer: c. Both 7 and 8wikipedia+1
Mode is most useful when the dataset contains:
a. No repeats
b. Numeric values with repeats
c. Categorical variables with repeated values
d. Only median values
Answer: c. Categorical variables with repeated valuesaigents+1
When mode, mean, and median are equal, the distribution is:
a. Skewed
b. Normal
c. Exponential
d. Bimodal
Answer: b. Normalinvestopedia+1
To calculate the mode for grouped data, which formula is used?
a.
b.
c.
d.
Answer: a. pickl+3
When is the mode unstable?
a. When sample size is very small
b. With large continuous datasets
c. For boolean data
d. For sorted data
Answer: a. When sample size is very smallinvestopedia
What is a multimodal distribution?
a. Has more than one mode
b. Only one mode
c. No mode
d. All values the same
Answer: a. Has more than one modetutorialspoint+1
What’s the mode of ?youtubegeeksforgeeks+2
a. 10
b. 12
c. 13
d. 14
Answer: b. 12geeksforgeeks+1
Which central tendency measure can be used when the modal value doesn’t exist?
a. Mean
b. Median
c. Both mean and median
d. Mode
Answer: c. Both mean and medianwikipedia+1
The mode can be graphically identified using:
a. Frequency plots
b. Scatter plots
c. Pie charts
d. Bar charts
Answer: a. Frequency plotsinvestopedia
Mode is most useful when analyzing:
a. Survey data with preferred choices
b. Time-series sales
c. Skewed continuous data
d. Correlation matrices
Answer: a. Survey data with preferred choicesgeeksforgeeks+1
Which is a correct statement about the mode in machine learning?
a. Mode can help in identifying popular classes
b. Mode ignores data distribution
c. Mode always equals mean
d. Mode is used for regression loss functions
Answer: a. Mode can help in identifying popular classeslinkedin+1
Which frequency table advantage does mode offer?
a. Quickly find most frequent items
b. Always shows outlier values
c. Orders the data
d. Predicts future trends
Answer: a. Quickly find most frequent itemscorporatefinanceinstitute+1
How does mode assist in market research?
a. By finding the most popular product
b. By computing average prices
c. By grouping products
d. By ranking suppliers
Answer: a. By finding the most popular productgeeksforgeeks+1
How is mode used in missing value imputation for categorical data?
a. Fill missing with least common value
b. Fill with most common value
c. Remove the row
d. Use mean
Answer: b. Fill with most common valuesimplilearn+1
Which algorithm uses mode for classification in ensemble learning?
a. Random Forest (majority voting)
b. Linear Regression
c. Principal Component Analysis
d. Convolutional Neural Network
Answer: a. Random Forest (majority voting)builtin+1
When can a dataset have no mode?
a. When all values are different
b. When all values are the same
c. When mode equals mean
d. When mean is minimum
Answer: a. When all values are differentwikipedia+1
When is mode calculation not preferred?
a. When every value repeats
b. When values don’t repeat
c. For text data
d. For binary data
Answer: b. When values don’t repeatstudyopedia+1
In travel demand modeling, mode refers to:
a. Travel time
b. Mode of transportation
c. Ticket price
d. Path distance
Answer: b. Mode of transportationscielo
What is the typical output of Pandas mode when multiple values tie?
a. The mean
b. A list of modes
c. Only the first mode
d. The sum
Answer: b. A list of modesstudyopedia
What type of values can a mode identify?
a. Only numeric
b. Numeric and categorical
c. Only text
d. Only counts
Answer: b. Numeric and categoricalthinkingneuron+1
The mode is not defined for:
a. Grouped data
b. Continuous data sets with no repeats
c. Categorical data
d. Discrete numeric data
Answer: b. Continuous data sets with no repeatsinvestopedia
What happens if the mode formula denominator is zero for grouped data?
a. Mode equals mean
b. Mode calculation fails
c. Mode equals the modal class lower limit
d. Mode equals class width
Answer: b. Mode calculation failsembibe+2
Which machine learning task is mode most critical for?
a. Classification
b. Regression
c. Clustering
d. Dimensionality reduction
Answer: a. Classificationaigents+1
Mode can be used to analyze which event frequency in business data?
a. Most common purchase time
b. Least common product
c. Average daily revenue
d. Standard deviation
Answer: a. Most common purchase timegeeksforgeeks+1
Why does mode remain robust in presence of outliers?
a. Outliers do not affect frequency counts
b. Outliers increase variance
c. Outliers shift the mean
d. Outliers adjust the standard deviation
Answer: a. Outliers do not affect frequency countspickl+1

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