august 28, 2013 keystone & stats. august 29, 2013 keystone & stats

August 28, 2013Keystone & Stats

August 29, 2013Keystone & Stats

August 30, 2013Keystone & StatsNo 3rd/4th Period

September 3, 2013Keystone & StatsNo 3rd/5th

September 4, 2013Keystone & Stats

September 5, 2013Keystone & Stats

September 9, 2013

What is the greatest common factor (GCF) of 2, 4, 14?A. 2 B. 14 C.28 D. 112

What is the least common multiple(LCM) of 10, 18?A. 2 B. 18 C.90 D. 180

Keystone

September 10, 2013Keystone

September 11, 2013Keystone

September 12, 2013

( 𝑑11 𝑓 16𝑑6 𝑓 6 )3

Simplify:

Keystone

September 13, 2013

(−2𝑥2𝑧 ) (−4 𝑦2𝑧 ) (−3 𝑥𝑦𝑧 )Simplify:

Keystone

September 13, 2013

Joe’s test grades in History class are: 92, 89, 85, 89, and 90. The semester final will count as two tests. Joe needs to get a grade of 90 or higher for the semester. What is the minimum score Joe can get on the final test and average 90?

Stats

September 16, 2013

2𝑚− 4

(2𝑚− 4 )3

Simplify:

Keystone

September 16, 2013

Maggie recently took a road trip. She bought 15 gallons of gasoline for $1.68 per gallon and 12 gallons at a price of $1.76 per gallon. She filled her tank once on the way back with 16 gallons at $1.65 per gallon. What was the average fuel cost per gallon on Maggie’s trip?

Instead of writing the entire question, summarize the important details!

Stats

September 17, 2013

(2 𝑥0 𝑦2 )− 3∙2 𝑦 𝑥3Simplify:

Keystone

September 19, 2013

Evaluate:

Keystone

September 19, 2013

Bob had three carries of 8 yards each and five carries of 6 yards each in a recent football game. What was his rushing average

(average yards per carry)?

Stats

September 20, 2013Evaluate:

8×155− (5+9 )

Keystone

September 20, 2013

A truck was able to average only 40 mph for the first four hours of a delivery route. How long

must the driver travel at a speed of 55 mph to average 50

mph for the trip?

Stats

September 23, 2013Evaluate:

(2h 𝑗2𝑘−2 ∙ h4 𝑗− 1𝑘4 )0

2h− 3 𝑗− 4𝑘− 2

Keystone

September 23, 2013

Juan says that if the standard deviation of a list is zero, then all the numbers on the list are

the same. Is Juan correct? If so, briefly explain why. If not, give a

counterexample.

Stats

September 24, 2013Evaluate:

√216 𝑥296 𝑦6 𝑧126Keystone

September 24, 2013

Would it be appropriate to say that a distribution with a standard deviation of 10

centimeters is more dispersed than a distribution with a

standard deviation of 5 inches? Support your position.

Stats

September 25, 2013Simplify the following:

4√3−√27

√2 ∙√8

Keystone

September 25, 2013

A set of data has a standard deviation of 9. Seventeen is

added to each of the original scores in the set of data. What

is the variance and standard deviation of the new set of

data?

Stats

September 26, 2013Simplify the following:

√3−√5+3√3−√5

√8+√18

Keystone

September 27, 2013Simplify the following:

2√5 ∙4√10

6 √12÷2√3

Keystone

September 30, 2013Keystone

September 30, 2013Summarize the question!

Stats

October 1, 2013

−4 (1+5 )2÷6−(42+5)Evaluate:

Keystone

October 1, 2013Using your calculator, find the mean, median,

variance, and standard deviation for the following:

12, 15, 6, 18, 11, 19, 22, 23, 24, 26, 5, 17, 21, 32, 40

Mean:

Median:

Standard deviation:

Variance:

Stats

October 2, 2013Using your calculator, find the mean, median,

variance, and standard deviation for the following:

13, 2, 5, 6, 7, 8, 1, 3, 5, 6, 15, 17, 13, 14, 15, 13, 15, 2, 1, 3, 5, 3, 5,

6, 10, 6Mean:

Median:

Standard deviation:

Variance:

Stats

October 3, 2013Using your calculator, find the mean, median,

variance, and standard deviation for the following:

17, 21, 25, 24, 23, 21, 19, 18, 24, 23, 22, 21, 25, 24, 22, 23, 24, 18, 19, 11, 15, 16, 17, 18, 24, 23, 22,

20, 22Mean:Median

:Standard deviation:

Variance:

Stats

October 4, 2013Round the following numbers to the hundredths.

7.1412

0.896

12.1387

Keystone & Stats

October 7, 2013A band just recorded a new album with 9 tracks. The shortest song on the album is 2 minutes and 21 seconds. The longest song on the album is 3 minutes and 43 seconds. What is a reasonable estimate for the total time of the album?

A. 54 minutesB. 27 minutesC. 8 minutesD. 3 minutes

Keystone

October 8, 2013When Sammy goes to lunch, he can buy a sandwich for $1.16 and a soft drink for $1.89. Which is a reasonable amount that Sammy would spend on 50 sandwiches and 55 soft drinks?

A. $310B. $260C. $160D. $110

Keystone

October 8, 2013Describe the different between a percentile

and a percentage.

A percentage score indicates the proportion of a test that someone has completed correctly. A percentile score tells us what percent of other scores are less than the data point we are

investigating.

Stats

October 9, 2013Stephanie is trying to estimate the cost of gift baskets that she is going to give her 4 friends. She knows that baskets cost $6.63 each, candles cost $1.63 each, and candy bars cost $0.94 each. She is also going to get everyone a restaurant gift card for $5.00.Each basket will include the following:•1 basket •2 candles •3 candy bars •1 gift cardEstimate how much money she will spend on all the gift baskets.

A. $15.00 B. $76.00 C. $60.00 D. $19.00

Keystone

October 10, 2013Label the following polynomials, “POLYNOMIAL” or “NOT A POLYNOMIAL”.

For the polynomial below, label the number of terms in the polynomial and the degree of the polynomial.

Keystone

October 10, 2013Chloe scored 80% on her English test. There are 249 other students who took the same exam. No one received the same score as she did, but 113 students received a lower score. What is her percentile ranking. What percentage of students scored better than Chloe?

Stats

October 11, 2013Keystone

October 11, 2013Find the median for the following sets of data.

3, 11, 6, 5, 4, 7, 12, 3, 10

4, 2, 11, 6, 2, 9

Stats

October 14, 2013Keystone

October 14, 2013

3, 11, 6, 5, 4, 7, 12, 3, 10

4, 2, 11, 6, 2, 9

Find Q1 and Q3 for the following sets of data.

Stats

October 15, 2013Keystone

October 15, 2013Suppose you received the highest

score on an exam. Your friend scored the second-highest score, yet you

both were in the 99th percentile. How can this be?

Stats

October 16, 2013Keystone

October 16 (or 17), 2013The average 20- to 29-year-old man is

69.6 inches tall, with a standard deviation of 2.7 inches, while the

average 20- to 29-year-old woman is 64.1 inches tall, with a standard deviation of 2.6 inches. Who is

relatively taller, a 75-inch man or a 70-inch woman?

Stats

October 17, 2013

and

Find the GCF.

Keystone

October 18, 2013

𝟑 𝒙𝟑+𝟔 𝒙𝟐−𝟏𝟓 𝒙Factor out the GCF.

𝟐 (𝒙−𝒚 )−𝒃(𝒙 −𝒚 )Factor completely.

Keystone

October 21, 2013

𝟓𝟔𝒙𝒘+𝟒𝟗𝒙 𝒌𝟐+𝟐𝟒𝒚𝒘+𝟐𝟏 𝒚 𝒌𝟐

Factor completely.

𝟏𝟔𝒎𝒏−𝟒𝒎𝟐+𝟐𝟖𝒏−𝟕𝒎

Factor completely.

Keystone

October 21, 2013Find the mean, median, mode, range, variance and standard deviation for the following set of

data USING YOUR CALCULATOR!

Stats

9, 24, 8, 9, 5, 8, 9, 10, 8, 10, 15, 2, 3, 18, 20, 1, 17, 2, 19, 3

Yes…. Your calculator! If you do not have it, GO GET IT RIGHT NOW!!! You don’t have to ask today, just go! You will not be

going later in the period.