Name: _______________________
Teacher: _____________________
Date: _____________
Period: ___________
Statistics Review
Part I: Multiple Choice
1) Which of the following data sets is bivariate?
(1) The number of hours a student spends doing their homework.
(2) The number of minutes it takes to run a mile.
(3) The heights, in inches, of freshman at Central College.
(4) The numbers of hours a spends studying for a test and the grade received on the test.
2) Which of the following statements shows a relationship that is correlated but not causal?
(1) The larger the dimensions of a rectangular patio, the more square footage there will be.
(2) The season of the year and the number of water related injuries/deaths.
(3) As the temperature rises, more the mercury in a thermometer will expand and rise.
(4) The number of lates to class and the number of detentions received.
3) Which statement is correct about the graph below?
(1) It shows a strong negative correlation between x and y.
(2) It shows a low positive correlation.
(3) It shows no correlation between x and y.
(4) It shows a strong positive correlation between x and y.
4) Which scatter plot shows the strongest positive correlation?
(1)
(2)
(3)
(4)
5) The table below represents the distribution of ages of neighborhood children. What interval
contains the median?
(1) 13 - 15
(2) 4 - 6
(3) 7 - 9
(4) 10 - 12
6) For the group of data 3, 3, 6, 7, and 16, which of the following is true?
(1) median = mean
(2) median < mode
(3) mean > median
(4) mode = mean
7) The accompanying histogram shows the heights of the students in Jasmine’s math class.
What is the total number of students in the class?
(1) 5
(2) 209
(3) 15
(4) 16
8) Which of the following phrases is an example of qualitative data?
(1) a person’s age
(2) a person’s height
(3) a person’s weight
(4) a person’s eye color
9) Which of the following data sets is univariate?
(1) The number of years of college attended and an individual’s annual income.
(2) The number of hours studying and scores on the SAT.
(3) The number of hours spent exercising and the amount of weight lost.
(4) The shoe size for each girl on a youth soccer team.
10) Which one of the following histograms represents the data in the table below?
(1)
(2)
(3)
(4)
11) Which of the following statements shows a relationship that is correlated but not causal?
(1) The amount of rainfall received and level of water in the lake.
(2) The increase of warm, sunny days and the number of ice cream vendors visible.
(3) The number of lights left on each day and the amount of the electric bill.
(4) The number of hours worked and how much money is made.
12) The accompanying histogram shows the distribution of student ages in an eighth grade class.
What age is the mode?
(1) 8
(2) 14
(3) 13
(4) 7
13) Which one of the following inequalities is true for the set of data 9, 12, 6, 7, 8, 9, 3?
(1) mean < median < mode
(2) mode < mean < median
(3) median < mean < mode
(4) mean < mode < median
14) The points in the scatter plot below represent the ages of automobiles and their values.
Which of the following conclusions can be made based on this diagram?
(1)
(2)
(3)
(4)
Age and value have a correlation that is between zero and 0.5.
Age and value have a correlation that is greater than 0.5.
Age and value have a correlation that is less than 0.
Age and value have no correlation.
Questions 15 – 18 refer to the following:
The accompanying box-and-whisker plot represents the scores earned on a math test.
15) According to the diagram shows, what is the median score?
(1) 70
(2) 85
(3) 77
(4) 75
16) What statement is not true about the box-and-whisker plot shown?
(1) Maximum = 100
(2) Minimum = 55
(3) 3rd Quartile = 85
(4) Mean = 75
17) According to the diagram shown, what score represents the first quartile?
(1) 70
(2) 100
(3) 55
(4) 75
18) A score of an 85 on the box-and-whisker plot shows refers to
(1) the median
(2) the maximum score
(3) the third quartile
(4) the mean
Part II: Short Answer (Show all work!)
19) If the scores 18, 20, 25, 11 and x have a mean of 19, what is the value of x?
20) The table bellow shows the distance, y (in feet), that a three-toed sloth travels after x minutes.
a) Determine a line of best fit for the data in the table.
b) Use your line of best fit from part (a) to predict how many feet the sloth will have moved
after 3.5 minutes.
c) Use your line of best fit from part (a) to determine how many minutes it will take for the
sloth to travel 37 feet.
21) A published report shows how the United States student population scored on the general
knowledge portion of the “Wecshsler Adult Intelligence Scale” IQ test. In the scatter plot
below, the line of best fit has been draw.
A student has an IQ of 118. Use the scatter diagram
shown to estimate this student’s mark in the general
knowledge test.
22) Create a stem and leaf plot to represent the following set of data:
12, 13, 21, 27, 33, 34, 35, 37, 40, 40, 41
Hint: Remember a key!
23) Twenty students were surveyed about the number of days they played outside in one week.
The results of this survey are shown below.
{6, 5, 4, 3, 0, 7, 1, 5, 4, 4, 3, 2, 2, 3, 2, 4, 3, 4, 0, 7}
a) Complete the frequency table below for these data.
b) Complete the cumulative frequency table below using these data.
c) On the grid below, create a cumulative frequency histogram based on the tables above.