Ann arranged her data into a distribution and then drew a graph called a histogram. The volleyball team used 3 pairs of size 6, 10 pairs of size 7, 15 pairs of size 8, 5 pairs of size 9, and 11 pairs of size 10.
Ann found out that last year the basketball team used 14 pairs of size 7 socks, 18 pairs of size 8, 15 pairs of size 9, and 6 pairs of size 10 were used. She called the basketball and volleyball team managers and collected the following data on sock sizes used by their players. Customarily, the values that occur are put along the horizontal axis and the frequency of the value is on the vertical axis.Īnn is the equipment manager for the Chargers athletic teams at Camosun College, located in Victoria, British Columbia. A more elegant way to turn data into information is to draw a graph of the distribution. This simple listing is called a frequency distribution. It is customary to list the values from lowest to highest. The most primitive way to present a distribution is to simply list, in one column, each value that occurs in the population and, in the next column, the number of times it occurs. The first step in turning data into information is to create a distribution. The topics are arranged in this order because the descriptive statistics can be thought of as ways to describe the picture of a population, the distribution. Second will be the discussion of descriptive statistics. The first topic in this chapter is a discussion of distributions, essentially pictures of populations (or samples).
This will all make more sense if you keep in mind that the information you want to produce is a description of the population or sample as a whole, not a description of one member of the population. This chapter is about describing populations and samples, a subject known as descriptive statistics. Descriptive Statistics and Frequency Distributions
0 kommentar(er)
