KEY - Unit 12 Test Review
KEY - Unit 12 Test Review
KEY - Unit 12 Test Review
1. Given the data set: (28, 43132, 45, 43.31), find the following statistical data: LIS
tob
60 62 64 66 68 70 72 74 76 78 80
4. Write an equation of the best fit line for the following data.
D - distance in 175 375 410 570 600 740 947 1212 1500
miles
f(d) - airfare in 110 130 163 167 145 180 180 261 214
dollars
.om IOS. HS
LOWEST-PRICED AIRFARES
FROM BALTIMORE
a. Equation of best fit line:
280
120
d. Use your equation to estimate the expected airfare for a
distance of&miles. • so
e. Would we have gotten the same answers if we each individually estimated the line of best fit by hand? Explain.
No eocW Calca14hh
5. The following data set is a random sample of a bowler's scores. Use the following data set to compute he mean
absolute deviation (show work). C) fmc.!ove»ate__ (j Q
110, 220, 105, 150, 210, 200, 190, 230 Mean absolute deviation:
90. -c
6. For the ata below, find the upper and lower boundaries for outliers and name the outliers, if any. Show all work.
13
Upper oun ary: Lower boun ary: Outliers (if any) and
7. Given the two box plots representing weights of baby chickens for different types of feed, what are two comparative
conclusions that can be drawn? Use statistical vocabulary in context of the problem.
a) Conclusion1: 'Z
ch'acs.
b) conclusion 2:
d) Does feed type 2 show skewed data? If so, which way is the skew?
8. The following histogram represents the final scores of a random sample of college students. Circle all descriptions
that apply below the graph.
10. Find the equation of the line of best fit for the data below:
x 3 4 8 5 6 7 4
2 3 10 6 9 7 2
Q: I.eq
Il. Would it be more accurate to use the calculator or find the line of best fit using pen and paper? Ct.*
Males
10 n 12 13 14 IS 16 17 18 20 21 22 23 24 25 26 27 28 29 30
b) What measures of center and spread would be appropriate to describe the male's data? (Aft
d) What measures of center and spread would be appropriate to describe the female's data?
13-18. Match the description with each piece of data. (more than one letter may apply)
19-24. Match the best correlation coefficient with each scatter plot.
25. All of the following are Corrrelations. Determine of they are just correlation or if they are a causation.