Page 280 - Data Science class 11
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3. Which of the following answers is correct?
a. A bar chart is a pictorial representation of data that presents categorical data with rectangular bars.
b. A bar chart is the pictorial representation of a dataset.
c. A bar chart and a bar graph are the same.
d. All of these
4. Choose the incorrect answer from the list below:
a. Line charts are usually used to identify trends in data.
b. Line charts are the same as horizontal bar charts.
c. Line graphs are created by plotting different points on their X and Y coordinates, then connecting them
with a line from beginning to end.
d. All of these
5. Which of the following is not correct?
a. A histogram is a graphical representation that organises a group of data points into user-specified ranges.
b. A histogram shows the history of plotting the data.
c. Histograms are used to show the distributions of variables, while bar charts are used to compare variables.
d. A histogram is similar in appearance to a bar graph.
6. Find the false statement in the case of a scatter plot.
a. A plot where the data is not arranged properly.
b. The main use of a scatter plot in R is to visually check if there is some relation between numeric variables.
c. Scatterplots show many points plotted in the Cartesian plane.
d. Line of best fit refers to a line through a scatter plot of data points that best expresses the relationship
between those points.
7. Which statement is best suited for explaining box plots?
a. Boxplots are a graphical technique for summarising a set of data on an interval scale.
b. Boxplots are used extensively in descriptive data analysis.
c. Boxplots are a measure of how well distributed the data is in a data set.
d. All of these
8. Which of the following is not a part of the "Measures of Central Tendency in Statistical Study?"
a. data average b. mean
c. mode d. median
9. Which of the following options is false in the case of mode?
a. The mode is the value that has the highest number of occurrences in a set of data.
b. Unlike the mean and median, the mode can have both numeric and character data.
c. R does not have a standard in-built function to calculate mode.
d. None of these
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