Exam 2: Data Representation

The five hottest temperatures (in Fahrenheit) recorded at the Central State Zoo and there frequency of occurrence over the past five years were examined by the zoo's statistician. These temperatures included: 55, 72, 86, 94, and 96. The relative frequency for a temperature of 55 was 20%, for a temperature of 72 was 30%, for a temperature of 86 was 14%, for a temperature of 94 was 15%, and for a temperature of 96 was 21%. What is the cumulative relative frequency for the temperature of 86?

Which of the following statements is correct for a continuous variable?

A sample distribution of variable X is as follows: X f 15 5 20 3 24 1 28 4 32 2 34 7 36 3 38 8 40 4 Calculate or draw each of the following for the sample distribution of X. Where possible, use SPSS to generate the data. a. frequency distribution b. cumulative relative frequency distribution c. histogram (ungrouped) d. frequency polygon e. Q₁ f. Q₂ g. Q₃ h. P₁₀ and P₉₀ i. box-and-whisker plot

For a dataset with five values (65, 72, 80, 88, 95), the relative frequency for the value 65 is 5%, the relative frequency for the value 72 is 15%, the relative frequency for the value 80 is 20%, the relative frequency for the value 88 is 30%, and the relative frequency for the value 95 is 30%. What is the cumulative relative frequency for the value 88?

In examining data collected over the past ten years, researchers at Disneyworld find that of 5,000 first time guests: 2,250 visited during the summer months; 675 visited during the fall; 1,300 visited during the winter; and 775 visited during the spring. What is the relative frequency for guests who visited during the spring?

Which of the following statements is correct for a continuous variable?

Among the following, what is the preferred method for graphing data pertaining to preference of coffee flavor of a sample?

For a distribution where the 75^th percentile is 50, what is the percentile rank of 50?

A sample distribution of variable X is as follows: X f 45 1 48 2 52 3 55 2 59 5 62 3 65 4 68 4 70 6 Calculate or draw each of the following for the sample distribution of X. Where possible, use SPSS to generate the data. a. frequency distribution b. cumulative relative frequency distribution c. histogram (ungrouped) d. frequency polygon e. Q₁ f. Q₂ g. Q₃ h. P₁₀ and P₉₀ i. box-and-whisker plot

Which of the following statements is correct for a continuous variable?