Topic Test Answers

Forty families were surveyed and asked to record the number of hours per week their television was in use. The results are shown in this frequency table. Number of Hours Frequency 0-9 1 10-19 6 20-29 15 30-39 12 40-49 2 50-59 4 Which histogram is an accurate representation of the data? a. b. c. d. Please select the best answer from the choices provided

Compute the standard deviation for the set of data. 2, 5, 6, 8, 14

Forty people were randomly sampled and surveyed as to the number of pets in their household. The results are listed below. 1 1 0 4 1 0 1 2 3 5 2 0 2 0 3 1 2 0 0 1 0 4 0 0 3 1 0 0 2 1 0 0 4 0 1 3 5 0 2 1 What is the BEST frequency table for these data? a. c. b. d. Please select the best answer from the choices provided

Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or negative correlation, describe its meaning in the situation. Average Cycling Speed

The bar graph in the following graphic represents fictional net exports in billions of dollars for five countries. Net exports are obtained by subtracting total imports from total exports; a negative net export means the country imported more goods than it exported. Estimate the net amount of exports for Spain.

The following table shows the life expectancy for women in the United States for selected years in the period 1975-2000. Year 1975 1980 1985 1990 1995 2000 Women 76.6 77.4 78.2 78.8 78.9 80.0 Which graph makes the increase in life expectancy from 1975-2000 appear to be relatively small? a. b. c. d. Please select the best answer from the choices provided

The following graphs show the performance of two stocks over the first five months of the year. Which graph appears to show the best performance? Which scale makes the graph appear to be rising more slowly?

A large construction company wants to review the ages of its sales representatives. A sampling of the ages of 25 sales reps are given: 50 42 32 35 41 44 24 46 31 47 36 32 30 44 22 47 31 56 28 37 49 28 42 38 45 The following histogram is a representation of the data. Calculate the mean and median ages.

Choose the correct statement about best-fit lines.

The table below shows the average SAT math scores from 1993-2002. YearSAT math scores19935031994504199550619965081997511199851219995112000514Using the data from the table determine if there is a linear trend between the year and the average SAT math scores and determine if there is an exact linear fit of the data. Describe the linear trend if there is one.

The following chart presents the number of new and abandoned hazardous waste sites found in various regions in the United States by the 1990s. Which region has the greatest number of hazardous waste sites? Estimate the number.

The table below shows the amount of money spent on skin diving and scuba equipment in some recent years. Skin Diving and Scuba Equipment Year Sales ($millions) 1993 315 1994 322 1995 328 1996 340 1998 345 1999 363 Let x represent the year and y represent the amount of sales, in millions of dollars, in the regression equation. , Use the regression equation to predict the sales of skin diving and scuba equipment in the year 2008.

This list shows the age at which 43 U.S. Presidents began their terms. 57 61 50 54 54 54 56 54 61 54 48 49 42 51 61 57 68 65 50 51 60 52 57 51 52 47 56 62 69 58 49 56 55 55 43 64 57 64 46 55 51 55 46 Before you can make a frequency table, you need to decide how to set up the age intervals. What is the BEST way to group these ages into six intervals? a. c. b. d. Please select the best answer from the choices provided

In every bar graph, line graph, or scatter plot, the vertical axis should include the following:

This list shows the lengths in feet of the 25 longest bridges in the United States.1010147016002000280010531495163221503500120015961750215038001207160018002300420013801600185023104260

The following scatter plot shows the billions of dollars spent by travelers in the United States since 1993. Write an equation for the line of best fit and then predict how much money travelers will spend in 2008.

A high school gym class was jumping rope. They wanted to know how many jumps each student could make before they missed. The results are listed below.25679111214141517192122232427323539394447536061828588909396101103114125

Which measure of central tendency should be used when there is an outlier?

Determine the standard deviation by filling in the table as part of your calculation. Consider the following data 6, 6, 10, 8, 10, 8

This list shows the age at which 43 U.S. Presidents began their terms.576150545454565461544849425161 57686550516052 57515247566269 58495655554364 57644655515546