Notebook

Nov 15, 2024, 3:21 PM

Infant Birth Weight.xlsx

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1. Use the “infant birth weight” data set for the following:

a) Compute descriptive statistics for the variables birth weight and maternal weight gain.
b) Construct a frequency distribution of the variable smoked and illustra e it with an appropriate diagram.
c) Construct a histogram of the variables systolic blood pressure. Comment on the shape of the data
The descriptive statistics for the variables are as follows:

Child's Birth Weight (kg):

  • Mean: 2.47 kg
  • Standard Deviation: 1.51 kg
  • Minimum: 0.29 kg
  • 25th Percentile: 1.41 kg
  • Median (50th Percentile): 2.17 kg
  • 75th Percentile: 3.64 kg
  • Maximum: 5.91 kg

Maternal Weight Gain (kg):

  • Mean: 14.07 kg
  • Standard Deviation: 7.46 kg
  • Minimum: 0.95 kg
  • 25th Percentile: 9.70 kg
  • Median (50th Percentile): 13.14 kg
  • 75th Percentile: 19.81 kg
  • Maximum: 30.09 kg
Next, let's construct a frequency distribution for the variable Maternal Smoking and illustrate it with an appropriate diagram.
The frequency distribution of the variable Maternal Smoking is illustrated in the bar chart above. It shows the number of mothers who smoked ('y') and those who did not ('n') during pregnancy.
Next, let's construct a histogram for the variable Maternal Systolic Blood Pressure and comment on the shape of the data.
The histogram of the variable Maternal Systolic Blood Pressure is displayed above.

Comments on the Shape of the Data:

  • The distribution appears to be right-skewed, indicating that there are a few mothers with significantly higher systolic blood pressure compared to the majority.
  • Most of the data points are concentrated on the lower end of the scale.
If you have any further questions or need additional analysis, feel free to ask!
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