Quiz
Chapter 2
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Questions in this quiz (14)
1For the following frequency distribution, how many individuals had a score of
X = 2?
- A1
- B2
- C3
- D4
2The following is a distribution of quiz scores. If a score of X = 2 or lower is failing,
then how many individuals failed the quiz?
- A2
- B3
- C5
- D9
3For the following frequency distribution, what is ΣX2 ?
- A30
- B45
- C77
- D(17)2 = 289
4For this distribution, how many individuals had scores lower than X = 20?
- A2
- B3
- C4
- DCannot be determined
5In a grouped frequency distribution one interval is listed as 20–24. Assuming that the scores are measuring a continuous variable, what is the width of this interval?
- A3 points
- B4 points
- C5 points
- D54 points
6A set of scores ranges from a high of X = 48 to a low of X = 13. If these scores are placed in a grouped frequency distribution table with an interval width of 5 points, the bottom interval in the table would be _______.
- A13-18
- B13-19
- C10-14
- D10-15
7A group of quiz scores ranging from 4–9 are shown in a histogram. If the bars in the histogram gradually increase in height from left to right, what can you conclude about the set of quiz scores?
- AThere are more high scores than there are low scores.
- BThere are more low scores than there are high scores.
- CThe height of the bars always increases as the scores increase.
- DNone of the above
8 If a frequency distribution graph is drawn as a smooth curve, it is probably showing a ______ distribution.
- ASample
- BPopulation
- CSkewed
- DSymmetrical
9A set of scores is presented in a frequency distribution histogram. If the histogram shows a series of bars that tend to decrease in height from left to right, then what is the shape of the distribution?
- ASymmetrical
- BPositively skewed
- CNegatively skewed
- DNormal
10In a distribution of exam scores, which of the following would be the highest score?
- AThe 20th percentile
- BThe 80th percentile
- CA score with a percentile rank of 15%
- DA score with a percentile rank of 75%
11Following are three rows from a frequency distribution table. For this distribution, what is the 90th percentile?
- AX = 24.5
- BX = 25
- CX = 29
- DX = 29.5
12Following are three rows from a frequency distribution table. Using interpolation, what is the percentile rank for X = 18?
- A52.5%
- B30%
- C29%
- D25%
13For the scores shown in the following stem and leaf display, what is the lowest score in the distribution?
- A7
- B15
- C50
- D51
14For the scores shown in the following stem and leaf display, how many people had scores in the 70s?
- A1
- B2
- C3
- D4
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- Description
- Year 1 Statistics I Quiz on Chapter 2, created by Eloise Brisson on 09/08/2022.
- Author
- Eloise Brisson
- Language
- English
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