Capstone Project & Professional Assessment — Quiz

Answer all 16 questions, then submit. You need 70% to pass. Log in to save progress.

Question 1
A strong end-to-end project starts and ends with…
A a dataset
B a business question and a recommendation
C a machine-learning model
D a chart
Question 2
Which loads a CSV into a Pandas DataFrame?
A pd.read_csv()
B pd.open()
C csv.load()
D pd.import_csv()
Question 3
An API returns data most commonly as…
A a PDF
B JSON
C an Excel file
D an image
Question 4
To fill missing numeric values while resisting outliers, use the…
A maximum
B median
C mode of text
D count
Question 5
‘Total sales per region’ is best produced with…
A df.describe()
B df.groupby('region')['sales'].sum()
C df.head()
D a scatter plot
Question 6
Mean far above median with positive skew indicates…
A symmetric data
B a few large values pulling the average up
C no outliers
D an error
Question 7
Correlation of −0.55 between discount and profit means…
A discount causes profit
B as discount rises, profit tends to fall
C they are unrelated
D profit causes discount
Question 8
To show a trend over time, the best chart is a…
A pie chart
B line chart
C bar chart
D heatmap
Question 9
A p-value below 0.05 in a hypothesis test means you…
A accept the null hypothesis
B reject the null hypothesis (statistically significant)
C have proven causation
D made an error
Question 10
To prove a change CAUSES an improvement, run…
A a correlation
B a randomised A/B test
C a bigger report
D a survey
Question 11
Which SQL feature gives running totals and rankings without collapsing rows?
A GROUP BY
B window functions
C WHERE
D LIMIT
Question 12
A LEFT JOIN returns…
A only matching rows
B all rows from the left table plus matches
C the right table only
D no rows
Question 13
A KPI differs from a plain metric because it is…
A always larger
B tied to a specific goal/target
C harder to compute
D always revenue
Question 14
On a dataset where only 2% churn, the misleading metric is…
A recall
B accuracy
C precision
D F1
Question 15
When you finish an analysis, you should always end with…
A a raw data dump
B a clear, actionable recommendation
C more questions only
D the code
Question 16
The strongest evidence of your skills to an employer is…
A a long CV
B a public portfolio of documented projects
C a certificate alone
D years studied