1) What is the range of this data set: 13, 15, 12, 15, 12, 13 a) 12-15 b) 13-15 c) 3 2) What is the mean of this data set: 24, 23, 26, 22, 25, 24 a) 24 b) 22 c) 26 d) 126 3) What can the mean be used as? a) Range b) Outlier c) Best estimate 4) What word could be used for 47 in the following set of data: 25, 23, 24, 26, 22, 47, 24, 23 a) an outlier b) the mean c) the range 5) Which is the outlier in this set of results: 56, 58, 54, 42, 55, 56 a) 56 b) 58 c) 54 d) 42 e) 55 f) 56 6) Which of these indicates a real difference between two sets of data? a) Different means b) Ranges overlapping c) Ranges not overlapping 7) What is improved by a scientist repeating work and getting similar results? a) validity of conclusions b) accuracy of results c) experimental technique 8) What is needed to make a correlation valid? a) a small amount of data b) a large amount of data c) more accurate data 9) When the number of cars using a road increases, the concentration of nitrogen dioxide in the air increases. What word would be used to describe this link? a) a correlation b) a connection c) a conclusion 10) What evidence will support a causal link in a correlation? a) more data b) accurate data c) a mechanism 11) If the ranges of two separate sets of data do not overlap, the two sets of data show a... a) ...correlation b) ...connection c) ...real difference 12) Data is more reliable if it can be... a) ...repeated b) ...written down c) ...put into a computer 13) To find the hardness of types of rubber you can measure the depth that a steel ball can be pushed into each rubber sample. In this investigation the type of rubber is the... a) ...factor b) ...outcome c) ...control 14) To find the hardness of types of rubber you can measure the depth that a steel ball can be pushed into each rubber sample. In this investigation the depth the steel ball can be pushed is the... a) ...factor b) ...outcome c) ...control 15) In a good experiment, one factor is changed and all of the others are... a) ...controlled b) ...varied c) ...kept small
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How Science Works quiz C1 C2 C3
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