Digital SAT Math: One-variable data-Practice Questions - New Syllabus
DSAT MAth Practice questions – all topics
- Problem-solving and Data Analysis Weightage: 15% Questions: 5-7
- Ratios, rates, proportional relationships, and units
- Percentages
- One-variable data: distributions and measures of centre and spread
- Two-variable data: models and scatterplots
- Probability and conditional probability
- Inference from sample statistics and margin of error
- Evaluating statistical claims: observational studies and Experiments
DSAT MAth and English – full syllabus practice tests
▶️ Answer/Explanation
Ans: A
Low temperatures: 49, 37, 41, 54, 63.
Sum: \( 49 + 37 + 41 + 54 + 63 = 244 \).
Mean: \( \frac{244}{5} = 48.8 \).
Question Easy
Which of the following dot plots, each with 9 data values, represents a data set with a median value that is less than 70 ?
▶️Answer/Explanation
Ans:C
To determine which dot plot represents a data set with a median value less than 70, we need to understand the concept of the median and analyze each dot plot. The median is the middle value when the data values are arranged in ascending order.
Given that each dot plot has 9 data values, the median will be the 5th value when the values are arranged in order.
Let’s analyze each dot plot:
Dot Plot A:
Data values: 55, 55, 55, 65, 70, 75, 75, 75, 80
- Median (5th value): 70
Dot Plot B:
Data values: 55, 60, 65, 70, 75, 80, 80, 85, 85
- Median (5th value): 75
Dot Plot C:
Data values: 60, 60, 60, 65, 65, 70, 80, 80, 80
- Median (5th value):65
Dot Plot D:
Data values: 65, 65, 65, 70, 70, 75, 80, 85, 85
- Median (5th value): 70
▶️ Answer/Explanation
Ans: C
Foothill: 87, 80, 75, 76, 70. Mean: \( \frac{388}{5} = 77.6 \). Median (ordered: 70, 75, 76, 80, 87): 76.
Valley: 44, 54, 65, 76, 82. Mean: \( \frac{321}{5} = 64.2 \). Median (ordered: 44, 54, 65, 76, 82): 65.
I: \( 77.6 > 64.2 \), true.
II: \( 76 > 65 \), true.