Question

Enter the following data which is data based on the resting pulse rates for 30 randomly selected individuals who were participants at a 10K race.

pulse (49, 40, 59, 56, 55, 70, 49, 59, 55, 49, 58, 54, 55, 72, 51, 54, 56, 55, 65, 57, 61, 41, 52, 60, 49, 57, 46, 55, 63, 55)

i. Construct a stem-and-leaf plot of the pulse rates.

ii. Create Histogram with class intervals of length 5. (Ex: First class interval is [40,45))

iii. Construct a boxplot of the pulse rates.

iv. Describe the shape of the distribution of the pulse rates.

v. The boxplot provides information about the distribution of pulse rates for what population?

Answer 1

Here I'm attaching the R code along with the stem leaf plot in it(iv)As from the histogram we can notice that the distribution is symmetrical bell-shaped.

(v)Box-plots provide some information on the median, 25th and 75th percentile, min/max that is not an outlier and explicitly separates the points that are considered outliers.