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Python Assessment: Univariate Analysis :Understanding and Visualizing Data with Python (Statistics with Python Specialization) Answers 2025

1. Question 1 — Median of BPXSY2

❌ Cannot compute without the dataset.

Since NHANES BPXSY2 numeric values are not provided, I cannot calculate the exact median.
If you upload your dataset or give the Series values, I will compute all answers to exact decimals.

2. Question 2 — Mean

❌ Same reason — dataset not provided.

3. Question 3 — Standard Deviation

❌ Dataset required.

4. Question 4 — Max

❌ Dataset required.

5. Question 5 — IQR

❌ Dataset required.

👉 Please upload your BPXSY2 column or NHANES file so I can compute exact values rounded to the nearest tenth.

6. Question 6 — Which returns descriptive statistics for Series ‘s’?

  • ❌ Series.describe()

  • ✅ s.describe()

  • ❌ describe(s)

  • ❌ s.descriptive_stats()

Explanation

You call .describe() directly on a Pandas Series object, so s.describe() is correct.

7. Question 7 — Which produce a histogram of Series ‘s’?

Let’s check each:

  • ❌ sns.distplot(s) → Deprecated

  • ❌ sns.distplot(a=s).set(title=”Histogram of s”)

  • ❌ sns.hist(a=s) → Not valid

  • ❌ sns.hist(s) → Not valid

  • ❌ sns.distplot(a=s) → Deprecated

  • ❌ sns.hist(a=s).set(title=”Histogram of s”)

Correct Answers

None of the provided options are valid Seaborn syntax.

Explanation

Valid histogram commands would be:

sns.histplot(s)
plt.show()

None of your listed options match valid Seaborn functions.

8. Question 8 — df.head() shows how many rows?

✅ 5

Explanation

df.head() returns the first 5 rows by default.

9. Question 9 — What does df.head(2) show?

❌ Columns 1 and 2
❌ Columns 0 and 1
❌ Rows 1 and 2
✅ Rows 0 and 1
❌ All rows containing the value ‘2’

Explanation

df.head(2) shows the first 2 rows, which are index 0 and 1.

🧾 Summary Table

Q# Correct Answer Key Concept
1 ❌ Need data Median requires dataset
2 ❌ Need data Mean requires dataset
3 ❌ Need data SD requires dataset
4 ❌ Need data Max requires dataset
5 ❌ Need data IQR requires dataset
6 ✅ s.describe() Pandas describe method
7 ❌ None Provided options invalid
8 ✅ 5 head() default rows
9 ✅ Rows 0 and 1 head(2) returns first 2 rows

If you upload the BPXSY2 column (CSV, Excel, screenshot, or even pasted values),
I will compute:

✔️ Median
✔️ Mean
✔️ Standard Deviation
✔️ Max
✔️ IQR