Transcript Episode4-DataAnalysisandPersonalFinancialLiteracy.ppt

Data Analysis & Personal Financial Literacy
Interpreting
Data
Comparing
Populations
Sales Tax &
Discount
Financial
Literacy
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A
The number of points scored by Lillian and Naomi during four
basketball games is shown in the graph below. Which statement
is best supported by the information in the graph?
A. In Game 1 the number of points scored by
Lillian was more than half the number of
points scored by Naomi.
B. The total number of points scored by Lillian
and Naomi in Game 4 was more than the
number of points scored by Lillian in Game 2.
C. In Game 4 the number of points scored by
Naomi was two times the number of points
scored by Lillian.
D. The total number of points scored by Lillian
and Naomi in Game 3 was seven times the
number of points scored by Lillian in Game 2.
Row 1, Col 1
Mean and median
The list below shows the number of
minutes Allison spent reading on each of
six days.
90, 60, 89, 94, 60, 93
Which two measures of these data best
describe the typical number of minutes
Allison spent reading each day?
Mean
Median
Mode
Range
1,2
$68
A store manager discounted the prices of
several items during a sale. The original
price and the sale price of each item are
shown in the table below. Based on the data
in the table, what would be the sale price of
an item that had an original price of $85?
1,3
$75
Jackie takes out a loan for $500. Her
loan earns simple interest at a rate of
3% per year. How much interest will
she have earned at the end of a 5 year
period?
1,4
J
The graph below shows the number of items sold at an
electronics store one weekend. Which statement is
best supported by the information in the graph?
2,1
Range
The list below shows Wendy’s bowling scores
in her last five games.
112, 123, 136, 145, 159
Which measure of data best describes how
much these bowling scores varied?
Mean
Median
Mode
Range
2,2
About $12.90
Your restaurant bill is 64.54. You
want to leave a 20% tip. About
how much of a tip would you
leave?
2,3
$418
Sallie’s gross income per month is
$3400. Of that amount, 18% is taken
out in taxes and other deductions.
Sallie is trying to save 15% of her
take home pay. How much can she
save per month, to the nearest
dollar?
2,4
C
The graph below shows the number of books sold at a
book fair in 5 days. Based on the graph, which
statement is true?
A. The number of books sold on Day 3 was
twice the number of books sold on Day 1.
B. The number of books sold on Day 5 was
half the number of books soldon Day 2.
C. The number of books sold on Day 5 was
about 93% of the number of books sold on
Day 4.
D. The number of books sold on Day 1 was
about 12% of the number of books sold on
Day 3.
3,1
Range
A librarian recorded the number of books
that were checked out on each of the last 9
days, as shown below.
142, 136, 125, 148, 150, 152, 115, 131, 136
Which measure of data does NOT describe a
typical number of books checked out on these
days?
Mean
Median
Mode
Range
3,2
About 28% off
A basketball hoop that is usually
$95 is on sale for $68.50. What
percent off is the basketball
hoop?
3,3
17.8%
Sarah and Randall have a total monthly
income of $4800 after taxes. Last month,
they spent $640 on food and $213 on
utility bills such as water and electricity.
What percent of their monthly income was
spent on these two categories?
3,4
The sample of his survey was not representative of most
motorists.
Mr. Moore surveyed 50 high school
students in his driver-education
course to determine how many times
most motorists have taken a drivereducation course. Explain why the
results of Mr. Moore’s survey may
NOT be valid.
4,1
150
A cafeteria manager surveyed a random
sample of students at a school to determine
which of 2 meal choices they prefer. The
results of the survey are shown below.
• Chicken is preferred by 30 students
• Pasta is preferred by 18 students
Based on the results of the survey, how many
of the 240 students at the school can be
expected to prefer chicken?
4,2
54% increase
At a sporting goods store, all prices
are marked up to improve the store’s
profits. Baseball gloves cost $13 to
buy from the manufacturer. The
store sells them for $20. What is the
percent increase on baseball gloves,
to the nearest whole percent?
4,3
Simple interest pays on the principle only, while
compound interest pays on the principle and the earned
interest.
What is the difference between
simple and compound interest?
4,4
C
George gathered samples for the average monthly precipitation,
in inches, for two cities and recorded the results in the box-andwhisker plots shown. What conclusion can you make from the
box-and-whisker plots?
A. The median amount of precipitation for
City A is greater than the median for
City B.
B. The median amount of precipitation for
City A is less than the median for city B.
C. The amount of precipitation in City B is
more spread out than in City A.
D. The amount of precipitation in City A is
more spread out than in city B.
5,1
A
A sample of seventh and eight grade students were
asked how many minutes they spent online last night.
The results were recorded in the box-and-whisker
plots shown. What can you conclude?
A. Eighth grade students have more
variation in the amount of time
spent online last night.
B. Seventh grade students have more
variation in the amount of time
spent online last night.
C. The sample size of seventh grade
students is less than the sample size
of eighth grade studetns.
D. The sample sizes are equal.
5,2
$37.89
The sales tax rate in Texas is
8.25%. If Jorden buys a new
sweater for $35, what is the total
amount he will pay for sweater,
including tax?
5,3
Net worth
When a person’s total liabilities
are subtracted from their total
assets, the result is called what?
5,4