Page 211 - Data Science class 10
P. 211

VIVA VOCE QUESTIONS









               1.  What is mean?
             Ans.  The “mean,” also known as the “simple average” in data science, is the average value of a data set.

               2.  What is median?
             Ans.  The median is the “middle” value in the list of numbers.

               3.  What do you mean by mode?
             Ans.  The mode is the number that appears the most in a dataset.

               4.  What is variance?
             Ans.  Variance measures the distance of each number in the data set from the mean and also from every other
                  number in the set.
               5.  What is standard deviation?
             Ans.  Standard deviation is a statistic that measures the degree of dispersion of a data set relative to its average.

               6.  What is discrete data?
             Ans.  Discrete data refers to the data that accepts only particular values. For example, if you take a test, you can
                  pass or fail in it.

               7.  What is continuous data?
             Ans.  Continuous Data: It refers to the data that can accept any value within a range. This range of values will have
                  a lower bound and an upper bound, which we call the minimum and the maximum possible values. For
                  example, the width of a road, the weight of a person, or the depth of an ocean.

               8.  What is probability distribution?
             Ans.  Probability distribution is a mathematical approach that displays the likely values for a variable and how
                  frequently they occur.

               9.  What are subsets?
             Ans.  In the real world, we frequently run into circumstances where we have a lot of data available to us while we
                  think about any issue. However, we do not need to take into account the complete set of data for analysis.
                  As a result, we can choose a specific subset of the data for our research rather than using the entire data set.
                  This division of a small set of data from a large set of data is known as a Subset.

              10.  What do you mean by frequency?
             Ans.  Frequency means the number of times an event or a value occurs.

              11.  What is frequency table?
             Ans.  A frequency table is a table that lists items and shows the number of times the items occur.

              12.  Define central tendency.
             Ans.  Central tendency means the value derived from the random variables in the set of data that reflects the
                  midpoint of the data distribution.






                                                                                         Viva Voce Questions   209
   206   207   208   209   210   211   212   213   214   215   216