Exam 3: A Picture Is Worth a Thousand Words: Creating and Interpreting Graphics

When you have continuous data, there can be an infinite number of points between two adjacent data values

GPA Frequency 2.5 12 2.6 11 2.7 15 2.8 9 2.9 3 3 28 3.1 48 3.2 31 3.3 29 3.4 43 3.5 31 3.6 27 3.7 11 3.8 15 3.9 8 4 1 Approximately how many individuals have GPAs 3.8 or higher?

Using the data below about how many airline miles each participant accrued over the span of the year No. of miles f 0-4999 241 5000-9999 452 10000-14999 540 15000-19999 869 20000-24999 823 25000-29999 972 30000-34999 1004 35000-39999 1138 40000-44999 1034 45000-49999 1497 50000-54999 1429 55000-59999 1471 60000-64999 1365 65000-69999 1372 70000-74999 1241 75000-79999 821 80000-84999 624 85000-89999 246 90000-94999 168 95000-99999 34 Would a bar chart or a frequency histogram is best for visualizing this data?

Frequency polygons are best used when the data are _____________________.

Only raw data can be plotted. Means cannot be plotted.

For each scenario, identify the best type of visualization for the data Having two groups: Experimental and Placebo in a drug trial. A researcher wants to plot mean differences in the number of days it took for the patient to recover.

A frequency polygon is most similar to which of the following data visualizations methods?

In a time-series graph, time is plotted along the ordinate

Which of the following is most similar to a frequency polygon, with regards to the type of data that it plots and the way it is interpreted?

Use the following stem and leaf-plot to answer the next few questions. The data plots the temperature of the day when there were earthquakes in the last 5 years. How many observations were there?

The y-axis was more formally known as the abscissa.

Continuous data suggests that…

Which of the following is usually not an example of discrete data?

Below are some data about whether a sample of individuals knows how to ride a bicycle Participant ID Yes or No 1 Yes 2 Yes 3 No 4 No 5 Yes 6 No 7 Yes 8 Yes 9 Yes 10 No 11 Yes 12 No 13 No 14 No 15 Yes What type of chart did you construct for the question above?

Explain the difference between a frequency histogram and a bar chart. What data are they each best used for and give an example of how they are used.

Below are some data about whether a sample of individuals knows how to ride a bicycle Participant ID Yes or No 1 Yes 2 Yes 3 No 4 No 5 Yes 6 No 7 Yes 8 Yes 9 Yes 10 No 11 Yes 12 No 13 No 14 No 15 Yes Is this data continuous or discrete?

Who invented the stem-and-leaf graph?

Frequency polygons are like histograms, except used for discrete data.

Using the data below about how many airline miles each participant accrued over the span of the year No. of miles f 0-4999 241 5000-9999 452 10000-14999 540 15000-19999 869 20000-24999 823 25000-29999 972 30000-34999 1004 35000-39999 1138 40000-44999 1034 45000-49999 1497 50000-54999 1429 55000-59999 1471 60000-64999 1365 65000-69999 1372 70000-74999 1241 75000-79999 821 80000-84999 624 85000-89999 246 90000-94999 168 95000-99999 34 how many people in this data set flew between 20000 and 59999 miles in the last year?

Using the data below about how many airline miles each participant accrued over the span of the year No. of miles f 0-4999 241 5000-9999 452 10000-14999 540 15000-19999 869 20000-24999 823 25000-29999 972 30000-34999 1004 35000-39999 1138 40000-44999 1034 45000-49999 1497 50000-54999 1429 55000-59999 1471 60000-64999 1365 65000-69999 1372 70000-74999 1241 75000-79999 821 80000-84999 624 85000-89999 246 90000-94999 168 95000-99999 34 How may people in this data set flew 70,000 or more miles in the last year?