NPTEL Data Analytics with Python Week 5 Assignment Answers 2025

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NPTEL Data Analytics with Python Week 5 Assignment Answers 2025

1. In the analysis of variance procedure (ANOVA) the term “factor” refers to:

  • the dependent variable
  • the independent variable
  • different levels of a treatment
  • the critical value of F
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2. In a problem of ANOVA, involving 3 treatments and 10 observations per treatment, SSE = 500. The MSE for this situation is

  • 130.2
  • 48.8
  • 18.52
  • 30.0
Answer :-

3. The ‘F’ ratio in a completely randomized ANOVA is the ratio of

  • MST/MSE
  • MSTR/MSE
  • MSE/MSTR
  • MSE/MST
Answer :-

4. An ANOVA procedure is applied to data obtained from 7 samples where each sample contains 10 observations. The degrees of freedom for the critical value of F are

  • 7 numerator and 20 denominator degrees of freedom
  • 5 numerator and 20 denominator degrees of freedom
  • 6 numerator and 63 denominator degrees of freedom
  • 7 numerator and 63 denominator degrees of freedom
Answer :-

5. 6 numerator and 63 denominator degrees of freedom

  • 280
  • 120
  • 80
  • 180
Answer :-

6. The critical F value with 8 numerator and 29 denominator degrees of freedom at a = 0.01 is

  • 2.18
  • 3.2
  • 3.53
  • 3.94
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7. Two Independent simple random samples are taken to test the difference between the means of two populations. The standard deviations are not known, but are assumed to be equal. The sample sizes are n1 = 15 and n2 = 35. The correct distribution to use is the

  • t distribution with 51 degrees of freedom
  • z distribution with 50 degrees of freedom
  • z distribution with 49 degrees of freedom
  • t distribution with 48 degrees of freedom
Answer :-

8. State true or false:

Statement: The sampling distribution of two populations is approximated by a normal distribution

  • True
  • False
Answer :-

9. Mean marks obtained by male and female students of school ABCD in first unit test are shown as below.

Male Female

Sample Size 64 36
Sample Mean Marks 44 41
Population Variance 128 72

The standard error for the difference between the two means is

  • 4
  • 7.46
  • 4.24
  • 2.0
Answer :-

10. If you are interested in testing whether or not the average marks of males is significantly greater than that of females, the test statistic is

  • 2.0
  • 1.5
  • 1.96
  • 1.645
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