Exam 12: Statistics

Construct a stem and leaf display for given data. -The numbers of attendees at an annual convention, for each of the last 20 years, are given below. Use a double-stem display. 159 146 154 145 132 134 134 135 127 125 126 132 135 143 148 150 146 150 129 134

Find the mode or modes. -The weights (in ounces)of 14 different apples are shown below. 5.0 5.5 4.6 6.9 4.1 5.0 5.5 5.7 6.0 6.9 5.0 4.8 6.9 4.4

Use the graph to answer the question. - Mike decides to buy shares of companies A, B, and C, which were initially selling for the same price. The changes in each stock's value are shown in the graph above. Could Mike have ever made A profit off of stock C if he had sold at the right time?

Solve the problem. -Jackie's sisters weigh 116 lb, 145 lb, 125 lb, and 120 lb. The average female in her city weighs 131.9 lb. How much does Jackie weigh if she and her sisters have an average weight of 131.9 lb?

Construct a vertical bar graph for the relative frequencies given. Blood type Frequency Relative frequency 22 0.44 19 0.38 6 0.12 3 0.06

Solve the problem. -Sheryl's mean score on eight exams is 79.875. Find the sum of her scores.

This double-bar graph shows the number of male (M)and female (F)athletes at a university over a four-year period. Answer the question. -What percentage of all students involved in athletics in 1986 was female? (Round to the nearest percent.)

Find the mode or modes. -61, 25, 61, 13, 25, 29, 56, 61

Find the median. -17, 22, 35, 47, 63, 72, 90

Construct a stem and leaf display for given data. -A professional basketball team plays 80 games a season. Below are the highest scores reached by one particular team. Use a double-stem display. 110 112 125 119 104 105 134 103 103 112 116 101 119 118 128 108 127 132 123 103 134 103 114 120 100 105 115 123 120 114 124 103 125 116 102 109 114 104 113 105

The table lists the winners of the Wimbledon women's singles title for the years 1976-1995. Construct a vertical bar graph for the given relative frequencies. Winner Frequency Relative frequency C. Evert 2 0.10 V. Wade 1 0.05 M. Navratilova 9 0.45 C. Martinez 1 0.05 S. Graf 6 0.30 E. Goolagong 1 0.05

In a school survey, students showed these preferences for instructional materials. Answer the question. -How many degrees are in the central angle for the "TV" sector?

Find the mean for the given frequency distribution. - Value Frequency 121 3 199 5 262 6 282 6 353 1

Use the graph to answer the question. - Mike decides to buy shares of companies A, B, and C, which were initially selling for the same price. The changes in each stock's value are shown in the graph above. Knowing what he knows Now, after how many days should he have sold in his stock in company A?

Find the median. -6, 12, 25, 28, 42, 42

Construct a frequency polygon. - Number of Exam scores Students 50-59 2 60-69 8 70-79 30 80-89 40 90-99 10

Construct the specified histogram. -The frequency table below shows the number of days off in a given year for 30 police detectives. Days off Frequency 0-1 10 2-3 1 4-5 7 6-7 7 8-9 1 10-11 4 Construct a histogram.

Find the mean for the given frequency distribution. -Find the approximate mean for the grouped frequency distribution. Use the class midpoint to represent each class. Round your answer to two decimal places. Score Frequency 60-69 3 70-79 12 80-89 7 90-99 2

Provide an appropriate response. -The median of a data set is always/sometimes/never (select one)one of the data points in a set of data. Explain your answer with brief examples.

Use the information to complete a circle graph. Note that the circle is divided into 100 equal sections. -Intended major of high school students: Science: 32\% Social Science: 8\% Humanities: 20\% Business: 16\% Other: 24\%