Which scatter plot shows a positive correlation between the number of hours a st

Question

Which scatter plot shows a positive correlation between the number of hours a student studies and the student's test grade? Jarvis recorded the number of text messages he sent and received each day for a month. He graphed his results in the box-and-whisker plot shown below. What is the number of text messages sent and received at the 75^th percentile? 6 9 10 20 Roberto would like to determine the percentage of fish in a pond that arc catfish. He randomly sampled 75 fish at the bottom of the pond. Which statement explains why Roberto's sample may be biased? Fish at the bottom of the pond may not be representative of all fish in the pond. Fish in this pond may not be representative of all ponds. Roberto should have also sampled fish in the river. Roberto should have only sampled fish swimming near the surface of the pond.

Explanation / Answer

8) Diagram 2 shows that a line going from left to right upwards can be drawn, and this represents a positive correlation.

9) The 75th percentile(Q3) is shown by the line at the end of the box, which falls on the value 10, which is option 3.

10) The statement (1) clearly explains why Robertos sample is biased.

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