Chapter 1. Interpreting Scatterplots

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Stat Tutor
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Question 1

4:07

Question 1.1

VzgRfUIED27dJNuj8Mnc/PEs60amQOHyU1bQE0ltq62pjNF2t64qLNxgzh4ASqvdq3M+HHrwxWCK9lnSpOD5oPOIThs=
Incorrect. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Correct. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Incorrect. Try again.
2

Question 2

4:20

Question 1.2

UJ2TJ+D9FKVm7LEmWv/AbDK5S21I0x+ZeVDn3LwzGXSSn8cT0GDWnyRRxel11JVnmlZAgQ==
Incorrect. Since a straight line can be drawn through the cloud of data, the form is linear.
Correct. Since a straight line can be drawn through the cloud of data, the form is linear.
Incorrect. Try again.
2

Question 3

4:29

Question 1.3

RBRkRH7Ff2kTnhpLUjfo4XJeKyhpeBcxUiXluRt63/AiM2nFXvbbTCKFvu9tn9KISXNuiw==
Incorrect. Since the linear pattern is clearly visible, the strength is strong.
Correct. Since the linear pattern is clearly visible, the strength is strong.
Incorrect. Try again.
2

Question 4

5:30

Question 1.4

VzgRfUIED27dJNuj8Mnc/PEs60amQOHyU1bQE0ltq62pjNF2t64qLNxgzh4ASqvdq3M+HHrwxWCK9lnSpOD5oPOIThs=
Incorrect. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Correct. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Incorrect. Try again.
2

Question 5

5:33

Question 1.5

UJ2TJ+D9FKVm7LEmWv/AbDK5S21I0x+ZeVDn3LwzGXSSn8cT0GDWnyRRxel11JVnmlZAgQ==
Incorrect. Since a straight line can be drawn through the cloud of data, the form is linear.
Correct. Since a straight line can be drawn through the cloud of data, the form is linear.
Incorrect. Try again.
2

Question 6

5:37

Question 1.6

NzTDBjatLFS0ittHO92RKVPjnbjaPIVB9F0/aUowLK3KsXd9pWQ8JIOu3K025MK317NixQ==
Incorrect. Since the linear pattern is clearly visible, the strength is strong.
Correct. Since the linear pattern is clearly visible, the strength is strong.
Incorrect. Try again.
2

Question 7

6:49

Question 1.7

Y2W7knftAbMdZS3qy6HmT3Copd31ClY/L0fcunxDCYuxv1QTfh5de33WyYAb6EjdxEKZOUr9Q/6Yrq6YFU0q31O4N2g=
Incorrect. Since a line drawn through the cloud of data will have negative slope, the direction is negative.
Correct. Since a line drawn through the cloud of data will have negative slope, the direction is negative.
Incorrect. Try again.
2

Question 8

7:03

Question 1.8

d6+nbrtqkVU9AREo2MnQpzBhOZxM7I+GaDOEZKWRsq/7krimJSaMjk9I7MaIhcjMYunGuQ==
Incorrect. Since a straight line can be drawn through the cloud of data, the form is linear.
Correct. Since a straight line can be drawn through the cloud of data, the form is linear.
Incorrect. Try again.
2

Question 9

7:25

Question 1.9

RBRkRH7Ff2kTnhpLUjfo4XJeKyhpeBcxUiXluRt63/AiM2nFXvbbTCKFvu9tn9KISXNuiw==
Incorrect. Since the linear pattern is clearly visible, the strength is strong.
Correct. Since the linear pattern is clearly visible, the strength is strong.
Incorrect. Try again.
2

Question 10

7:58

Question 1.10

bzbl67N+h7ctg+dZs4vZCQrYbMc47uE/9O803qJmm3zA73mIAdpeg2twFYxu4foIiKwRNPffUQl6s8V6i+xJrg==
Incorrect. Since the cloud of data has no pattern, there is no relationship.
Correct. Since the cloud of data has no pattern, there is no relationship.
Incorrect. Try again.
2

Question 11

8:29

Question 1.11

f8BwqDv7Y6/0mSgXv6W/19JYyZUeKxx2fCYOT4xnE0sDEX6t3isSJhZEt38S3lWDYEqoCT7KBmJ/BMSM9lwGNyQBTruPGGq1Nc9YRw==
Incorrect. Since the cloud of data has a curved pattern, there is a relationship.
Correct. Since the cloud of data has a curved pattern, there is a relationship.
Incorrect. Try again.
2

Question 12

8:38

Question 1.12

VzgRfUIED27dJNuj8Mnc/PEs60amQOHyU1bQE0ltq62pjNF2t64qLNxgzh4ASqvdq3M+HHrwxWCK9lnSpOD5oPOIThs=
Incorrect. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Correct. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Incorrect. Try again.
2

Question 13

8:42

Question 1.13

KoqEDqOtWTRU1M4U4S/y6wH8EH7KFFwOWkodHotqH7SbAFTbbKpUThvfn9HMEehjk/5zHA==
Incorrect. Since a straight line drawn through the cloud of data does not follow the form, but a curved line drawn through the data does, the form is curved.
Correct. Since a straight line drawn through the cloud of data does not follow the form, but a curved line drawn through the data does, the form is curved.
Incorrect. Try again.
2

Question 14

8:48

Question 1.14

RBRkRH7Ff2kTnhpLUjfo4XJeKyhpeBcxUiXluRt63/AiM2nFXvbbTCKFvu9tn9KISXNuiw==
Incorrect. Since the curved pattern is clearly visible, the strength is strong.
Correct. Since the curved pattern is clearly visible, the strength is strong.
Incorrect. Try again.
2

Question 15

9:25

Question 1.15

vyqjdurMgyMUvAky6ZVZn31APK1SBdGvcxIy5eLMdPrA/iFjAujaShtxzf+GvUh2hOgmBb6wpLHQ2NrBVo5/+QvL/4zhKSqpxSex0MBchVBJwj6AtDBMyN0hJ3A=
Incorrect. Since the cloud of data seems to have a linear pattern, there is a relationship.
Correct. Since the cloud of data seems to have a linear pattern, there is a relationship.
Incorrect. Try again.
2

Question 16

9:29

Question 1.16

VzgRfUIED27dJNuj8Mnc/PEs60amQOHyU1bQE0ltq62pjNF2t64qLNxgzh4ASqvdq3M+HHrwxWCK9lnSpOD5oPOIThs=
Incorrect. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Correct. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Incorrect. Try again.
2

Question 17

9:32

Question 1.17

UJ2TJ+D9FKVm7LEmWv/AbDK5S21I0x+ZeVDn3LwzGXSSn8cT0GDWnyRRxel11JVnmlZAgQ==
Incorrect. Since a straight line can be drawn through the cloud of data, the form is linear.
Correct. Since a straight line can be drawn through the cloud of data, the form is linear.
Incorrect. Try again.
2

Question 18

9:37

Question 1.18

NzTDBjatLFS0ittHO92RKVPjnbjaPIVB9F0/aUowLK3KsXd9pWQ8JIOu3K025MK317NixQ==
Incorrect. Since the linear pattern is clearly visible, the strength is strong.
Correct. Since the linear pattern is clearly visible, the strength is strong.
Incorrect. Try again.
2

Question 19

10:17

Question 1.19

h+gDpqUZHcYH4Al9hiPqUN335VshVG14Emb1LWmkw5NVTLjXpKJAO/CwEb8Zd/jKLYZjxuqOXbbH3GBdIglGkU8wAvNpAw/XYs6rktN8ZYk27M1gmaTPGBa205spPxls
Incorrect. Since the cloud of data seems to have a linear pattern (with the exception of an outlier), there is a relationship.
Correct. Since the cloud of data seems to have a linear pattern (with the exception of an outlier), there is a relationship.
Incorrect. Try again.
2

Question 20

10:22

Question 1.20

Y2W7knftAbMdZS3qy6HmT3Copd31ClY/L0fcunxDCYuxv1QTfh5de33WyYAb6EjdxEKZOUr9Q/6Yrq6YFU0q31O4N2g=
Incorrect. Since a line drawn through the cloud of data will have negative slope, the direction is negative.
Correct. Since a line drawn through the cloud of data will have negative slope, the direction is negative.
Incorrect. Try again.
2

Question 21

10:25

Question 1.21

UJ2TJ+D9FKVm7LEmWv/AbDK5S21I0x+ZeVDn3LwzGXSSn8cT0GDWnyRRxel11JVnmlZAgQ==
Incorrect. Since a straight line can be drawn through the cloud of data, the form is linear.
Correct. Since a straight line can be drawn through the cloud of data, the form is linear.
Incorrect. Try again.
2

Question 22

10:33

Question 1.22

RBRkRH7Ff2kTnhpLUjfo4XJeKyhpeBcxUiXluRt63/AiM2nFXvbbTCKFvu9tn9KISXNuiw==
Incorrect. Since the linear pattern is clearly visible, the strength is strong.
Correct. Since the linear pattern is clearly visible, the strength is strong.
Incorrect. Try again.
2

Question 23

11:06

Question 1.23

sVqW1y5yFyOPjLRdna6zGEV1OHFbWwFcOasCpBT9igzmiXXPvaNdvu1iNy2fJANBnM4mCbD+3FnWKoRvbJKtJ1UcibWQzDmm
Incorrect. Since the cloud of data clearly has a linear pattern, there is a relationship.
Correct. Since the cloud of data clearly has a linear pattern, there is a relationship.
Incorrect. Try again.
2

Question 24

11:14

Question 1.24

VzgRfUIED27dJNuj8Mnc/PEs60amQOHyU1bQE0ltq62pjNF2t64qLNxgzh4ASqvdq3M+HHrwxWCK9lnSpOD5oPOIThs=
Incorrect. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Correct. Since a line drawn through the cloud of data will have positive slope, the direction is positive.
Incorrect. Try again.
2

Question 25

11:25

Question 1.25

UJ2TJ+D9FKVm7LEmWv/AbDK5S21I0x+ZeVDn3LwzGXSSn8cT0GDWnyRRxel11JVnmlZAgQ==
Incorrect. Since a straight line can be drawn through the cloud of data, the form is linear.
Correct. Since a straight line can be drawn through the cloud of data, the form is linear.
Incorrect. Try again.
2

Question 26

11:41

Question 1.26

RBRkRH7Ff2kTnhpLUjfo4XJeKyhpeBcxUiXluRt63/AiM2nFXvbbTCKFvu9tn9KISXNuiw==
Incorrect. Since the linear pattern is clearly visible, the strength is strong.
Correct. Since the linear pattern is clearly visible, the strength is strong.
Incorrect. Try again.
2

Question 27

11:57

Question 1.27

H19ogS9mHSYiAmDbK8x+BFLVHpWUqjLHUpfJnKh0VgPEYugJZK5bGlzRpB6VMwQpVGtrBqATrjRtM/9bJsfgKEJAyMp9eNvKfc20SSOEiD8Cd/k8J7YYPIelfa475v+ZwpQLc4EsV7m+csXDYDgA7JVVFjjrbin1
Incorrect. A .25 carat diamond is well within the range of observed x-values so we can predict its price.
Correct. A .25 carat diamond is well within the range of observed x-values so we can predict its price.
Incorrect. Try again.
2

Question 28

12:13

Question 1.28

ie4etxcJTPNtqnFyTX3MLVf+qQVdSeTvLGvPCRD3gMQsoVoCS/WtcUVoVz6wW5AWe0xYAeIciQcIlStwO/oC0GhlZA4earwFRpbLsokMu75VpDW7RjlbwEfv6zSzy2TP72CS1rg5TdBwuY05KZm5sZnwoTSZxDtO
Incorrect. A 2 carat diamond is quite a ways outside the range of observed x-values so predicting its price will give a bad prediction.
Correct. A 2 carat diamond is quite a ways outside the range of observed x-values so predicting its price will give a bad prediction.
Incorrect. Try again.
2

Question 29

13:39

Question 1.29

EyltGykjkkzwmEwNsKT7FwUNUM/MEb+Qj3lRU7FbQwlmRRRb2xKl2JEphZ13xVRZilKOHg6ZyiN52t+5XBAni3l/4We26bQAGCjNjdY6eZSobfbiaaYmp4o3b/N3EcuV/ebW3kqvod4uCpl/BmWM8+K1dMsAduM+Npug3/8CG3s=
Incorrect. Since examining the scatterplot visually does not reveal a pattern in the cloud of data, we would say there is no relationship.
Correct. Since examining the scatterplot visually does not reveal a pattern in the cloud of data, we would say there is no relationship.
Incorrect. Try again.
2