Swimmertime (min)
Eleanor Faulkner GBR4.23
Stefania Pirozzi ITA4.30
Kiera Janzen USA4.30
Claudia Daska USA4.30
Jordan Mattern USA4.32
Anna Olasz HUN4.32
Annick van Westendorp SUI4.33
Chloe Francis NZL4.37
Simona Marinova MKD4.42
Andrea Cedron PER4.45
Shahd Mostafa EGY4.45
Inga Elin Cryer ISL4.47
Kaori Miyahara JPN4.48
Wei Li Lai MAS4.50
Marija Joksimovic SRB4.53
Natasha de Vos RSA4.55
Shannon Austin SEY4.57
Chrisell Wyn Jia Koh SIN4.57
Nesrine Khelifati TUN4.62
Saskia Postma ARU4.68

MS 150 Statistics quiz three • Name:

The data is the times for the youth women's 400 meter freestyle swimming heats in the inaugural Singapore 2010 Youth Olympic Games held in Singapore on 20 August 2010. The times are in decimal minutes. Use the time data for the following questions.

  1. __________ What is the level of measurement?
  2. __________ Find the sample size n.
  3. __________ Find the minimum.
  4. __________ Find the maximum.
  5. __________ Find the range.
  6. __________ If this data is divided into five classes, what is the width of a single class?
  7. Determine the frequency and calculate the relative frequency using five classes. Record your results in the table provided.
Class upper limitsFrequency FRelative Frequency p(x)
Sums:
  1. Sketch a frequency histogram of the data, labeling your horizontal axis and vertical axis as appropriate.
  2. What is the shape of the histogram?

Homework 30 August

  1. Determine the sample size n
  2. Calculate the minimum
  3. Calculate the maximum
  4. Calculate the range
  5. Calculate the midrange
  6. Calculate the mode
  7. Calculate the median
  8. Calculate the mean
  9. Calculate the standard deviation sx
  10. Calculate the coefficient of variation (CV)