1. No category

Name __________________________________
Stats Review
Date __________________________
Ms. Molt
Algebra 1 OLLCHS
1. Isaiah collects data from two different companies, each with four employees. The results of the study, based
on each worker's age and salary, are listed in the tables below.
Which statement is true about these data?
A)
B)
C)
D)
The median salaries in both companies are greater than
.
The mean salary in company 1 is greater than the mean salary in company 2.
The salary range in company 2 is greater than the salary range in company 1.
The mean age of workers at company 1 is greater than the mean age of workers at company 2.
2. Kelsey scored the following points in her first six basketball games: 22, 14, 19, 22, 8, and 17. What is the
relationship between the measures of central tendency of these data?
A) mode > median > mean
C) mean > median > mode
B) median > mode > mean
D) mode > mean > median
3. Christopher looked at his quiz scores shown below for the first and second semester of his Algebra class.
Semester 1: 78, 91, 88, 83, 94
Semester 2: 91, 96, 80, 77, 88, 85, 92
Which statement about Christopher's performance is correct?
A)
B)
C)
D)
The interquartile range for semester 1 is greater than the interquartile range for semester 2.
The median score for semester 1 is greater than the median score for semester 2.
The mean score for semester 2 is greater than the mean score for semester 1.
The third quartile for semester 2 is greater than the third quartile for semester 1.
4. The chart below shows how the cost of a specific notebook varied over a 5-week period.
Based on the chart, which statement is true about the cost of this notebook over this period?
A) The mode was $3.00.
C) The median was $4.50.
B) The mean was $4.30.
D) The median was $3.00.
5. The histogram below shows the distribution of the number of children in the families of the students in a
ninth-grade class.
The mode of the set of data in the histogram is
A) 5
B) 2
C) 3
D) 7
6. The freshman class held a canned food drive for 12 weeks. The results are summarized in the table below.
Which number represents the second quartile of the number of cans of food collected?
A) 29.5
B) 30.5
C) 40
D) 60
7. Corinne is planning a beach vacation in July and is analyzing the daily high temperatures for her potential
destination. She would like to choose a destination with a high median temperature and a small interquartile
range. She constructed box plots shown in the diagram below.
Which destination has a median temperature above 80 degrees and the smallest interquartile range?
A) Ocean Beach
C) Serene Shores
B) Whispering Palms
D) Pelican Beach
8. During the last 15 years of his baseball career, Andrew hit the following number of home runs each season.
35, 24, 32, 36, 40 32, 40, 38, 36, 33, 11, 20, 19, 22, 8
State and label the values of the minimum, 1st quartile, median, 3rd quartile, and maximum.
Using the line below construct a box-and-whisker plot for this set of data.
9. Using the line provided, construct a box-and-whisker plot for the 12 scores below.
26, 32, 19, 65, 57, 16, 28, 42, 40, 21, 38, 10
Determine the number of scores that lie above the 75th percentile.
10. The box-and-whisker plot below represents the ages of 12 people.
What percent of these people are age 15 or older?
A) 25
B) 35
C) 75
D) 85
11. The number of songs fifteen students have on their MP3 players is:
120, 124, 132, 145, 200, 255, 260, 292, 308, 314, 342, 407, 421, 435, 452
State the values of the minimum, 1st quartile, median, 3rd quartile, and maximum.
Using these values, construct a box-and-whisker plot using an appropriate scale on the line below.
12. The graph below illustrates the number of acres used for farming in Smalltown, New York, over several
years.
Using a line of best fit, approximately how many acres will be used for farming in the 5th year.
A) 0
B) 200
C) 300
D) 400
13. The scatter plot shown below represents a relationship between x and y.
This type of relationship is
A) a positive correlation
C) a zero correlation
B) a negative correlation
D) not able to be determined
14. What is the relationship between the independent and dependent variables in the scatter plot shown below?
A) undefined correlation
C) positive correlation
B) negative correlation
D) no correlation
15. Which of the following represents a scatter plot indicating a relationship between the ink in a pen and
words written for an essay?
A)
B)
C)
D)
16. The table below shows the concentration of ozone in Earth's atmosphere at different altitudes. Write the
exponential regression equation that models these data, rounding all values to the nearest thousandth.
17. Which value of r represents data with a strong positive linear correlation between two variables?
A) 0.89
B) 0.34
C) 1.04
D) 0.01
18. A cup of soup is left on a countertop to cool. The table below gives the temperatures, in degrees
Fahrenheit, of the soup recorded over a l0-minute period.
Write an exponential regression equation for the data, rounding all values to the nearest thousandth.
19. The points on the scatter plot below represent the depth below the surface of a pool and the water pressure.
Based on the scatter plot, it would be reasonable to conclude
A)
B)
C)
D)
Depth and pressure have a coefficient of correlation that is greater than zero
Depth and pressure have a coefficient of correlation that is equal to zero
Depth and pressure have a coefficient of correlation that is between zero and –0.5
Depth and pressure have a coefficient of correlation that is less than –0.5
20. Which graph represents data used in a linear regression that produces a correlation coefficient closest to
–1?
A)
B)
C)
D)
21. Two different tests were designed to measure understanding of a topic. The two tests were given to ten
students with the following results: