Page 132 - Data Science class 10
P. 132
Group 2
Group 2 arrangement with average 6
Because the equal share value for each group is 6, the two groups cannot be distinguished based on the
equal share value. An analysis question in this case may be:
Which group is closer to being equal?
We can offer different answers to this question, including:
1. Group 2, as this group has the highest frequency of stacks of six snap cubes.
2. Group 1, as for this group, we need fewer snap cubes to level out all the stacks to the equal share value
of six.
The second method of having fewer snap cubes to move can be thought of as counting the “number of
steps to equal”, or, how many steps we need to move the snap cubes to create the equal-sized groups.
Fewer steps indicate that the distribution is closer to being equal and has less variability from the mean.
We can go through the process to check that for Group 1, we need to move two cubes, a total of two steps.
For Group 2, we need to move two cubes, a total of two steps each. Thus, Group 1 and Group 2 have equal
variability from the mean.
Interpret the Results
Now, it is time to interpret the results to answer the original question,
What is the average family size of students in your school?
Using the results from the last two groups, we can comment that if the families are of equal size, the
number of people in a household will be six. This will be equal share or mean value.
Thus, with the help of this activity we have learnt how mean helps us get a quick resolution to our
day-to-day activities.
Recap
• A statistic is a quantitative feature of a sample that frequently helps estimate or test the population constraint (for example,
a sample mean or proportion).
• Data science is a science of exploring available data and utilising it in your day-to-day transactions.
• The division of a small set of data from a large set of data is known as a Subset.
• A Data Frame is a two-dimensional data structure in which data is arranged in tabular form, i.e., in the form of rows and
columns.
• Frequency means the number of times an event or a value occurs.
130 Touchpad Data Science-X

