Statistics
Phyllis is comparing the daily high temperatures in two cities.
Chicago, Il
40, 39, 41, 38, 42, 44, 45, 37, 48, 46
San Francisco, CA
59, 66, 57, 63, 67, 61, 70, 62, 61, 64
Which description best compares the two data sets?
a. Both data sets have a similar mean and variability.
b. Each data set has a much different mean and variability than the other data set.
c. Both data sets have similar means buy one data set has a much high variability.
d. Both data sets have similar variability but one data set has a much higher mean.
d. Both data sets have similar variability but one data set has a much higher mean.
Maria is flipping a coin and spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the coin will land on heads and the spinner will land on the letter "A"?
1/8 or 0.125, or 12.5%
16/32
1/2
A square has one side measuring 5 feet. What is its area?
25 square feet
If there are 6 boys and 3 girls, what is the ratio of girls to boys in lowest form?
1:2
The data show the number of floors in apartment buildings in two different neighborhoods.
Neighborhood A
21, 24, 36, 18, 35, 15, 12, 16, 14, 28
Neighborhood B
7, 4, 8, 10, 5, 8, 4, 6, 3, 5
Which of the following describes the relative mean variability of the data for Neighborhood A as compared to the data for Neighborhood B?
a. both are relatively high
b. both are relatively low
c. the mean is relatively high and the variability is relatively low
d. the variability is relatively high and the mean is relatively low.
b. both are relatively low
The classic wood carousel at Carousel Park in Hampton, VA has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a jumping horse?
1/2, or 0.50, or 50%
60/144
5/12
A triangle has a base of 6 inches and a height of 9 inches. What is its area?
27 square inches
Simplify: 16:4
4:1
The data show the number of floors in apartment buildings in two different neighborhoods.
Neighborhood A
21, 24, 36, 18, 35, 15, 12, 16, 14, 28
Neighborhood B
7, 4, 8, 10, 5, 8, 4, 6, 3, 5
Which of the following best describes the overlap in the data sets?
a. no overlap
b. slight overlap
c. moderate overlap
d. complete overlap
a. no overlap
What is the probability of rolling two odd numbers in a row with a standard number cube?
1/4, or 0.25, or 25%
4/12
1/3
What is the area of a rectangle whose given side lengths are 8 cm and 12 cm?
96 square cm
Solve for x to make these proportional: 5/6 = x/36
x = 30
Josh's neighborhood started two clubs --- one for movies and one for books. The ages of the book club members are 48, 27, 32, 56, 59, 43, 39, 28, 28, 42, 71, and 55 years. The ages of the movie club members are 24, 27, 18, 26, 34, 32, 42, 45, 16, 23, 19, and 30 years.
What is the range of the overlap between the two sets of data?
a. between 18 and 45 years of age
b. between 18 and 71 years of age
c. between 27 and 45 years of age
d. between 27 and 71 years of age
c. between 27 and 45 years of age
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaces. A second marble is then taken out and not replaced. What is the probability both marbles that were taken out are red?
1/5, or 0.20, or 20%
3/39
1/13
What is the area of a cube with faces equal to 3cm by 3cm?
54 square cm
Simplify: 144:60
12:5
Josh's neighborhood started two clubs --- one for movies and one for books. The ages of the book club members are 48, 27, 32, 56, 59, 43, 39, 28, 28, 42, 71, and 55 years. The ages of the movie club members are 24, 27, 18, 26, 34, 32, 42, 45, 16, 23, 19, and 30 years.
How do the medians of each data set compare to the overlap in the data sets?
a. Neither median is included in the overlap.
b. Only the median age of the book club members is included in the overlap.
c. Only the median age of the move club members is included in the overlap.
d. Both medians are included in the overlap.
d. Both medians are included in the overlap.
Jarvonya spins a spinner with 5 equal sections numbered 1-5 and she spins another spinner with 5 equal sections with the letters A-E. What is the probability she will spin a 4 and a B?
1/25 or 0.04, or 4%
180/240
3/4
What is the area of a circle whose diameter is 12cm?
113.04 cm squared
Last week Bill earned $210 for a 30-hour week. What was his pay rate? What would he have earned for a 40-hour week?
Pay rate = $7/hour In a 40-hour week Bill would have earned $280.