📊 statistics

1. **Stating the problem:** We are given data for the number of visitors ($x$) and daily sales ($y$), and we need to find the regression equation $\hat{y} = b_0 + b_1 x$.

1. المشكلة: حل أسئلة الإحصاء. 2. الإحصاء هو علم جمع البيانات وتحليلها وتفسيرها.

1. المشكلة: لدينا جدول بيانات يحتوي على نقاط وقيم مرتبطة بها مثل ni و N و ci و C و N \times ci. 2. الهدف: فهم كيفية حساب القيم في الجدول، خاصة العمود الأخير الذي يحتوي على حاصل ضرب

1. **State the problem:** We have a data set of 20 call counts and need to analyze measures of central tendency (mean, median, mode) and distribution shape. 2. **Original data:** 1

1. **Problem statement:** We have 18 headache pain ratings: 15, 16, 16, 16, 19, 27, 28, 30, 31, 32, 37, 44, 45, 53, 63, 71, 85, 90. We analyze measures of central tendency (mean, m

1. Stating the problem: Calculate the value of $h$ in a sign test where the number of positive signs is 25 and the number of negative signs is 6. 2. Formula used: In a sign test, $

1. **Problem statement:** We have 500 students with mean weight $\mu = 75.5$ kg and standard deviation $\sigma = 7.5$ kg. We assume weights are normally distributed. We want to fin

1. **Problem statement:** Estimate the number of students whose obtained marks are between 35 and 40 from the given grouped data. 2. **Given data:**

1. **Nyatakan masalah:** Kita ingin memahami model regresi nonparametrik spline truncated linier dengan satu titik knot, dengan orde linier ($m=1$), satu titik knot ($r=1$), dan ti

1. **State the problem:** We have votes for three faculty members: Ms. Luz (60 votes), Mr. Henry (25 votes), and Ms. Lina (35 votes). We need to find: a. Total number of students w

1. **Problem Statement:** We have a total of 135 Senior High School students.

1. Stating the problem: We need to find the percentage of students who will attend, will not attend, and are not decided based on given data. 2. To find the percentage, use the for

1. **Problem Statement:** The Supreme Student Government surveyed 135 Senior High School students about attending the Promenade. 40 will attend, 25 will not attend, and the rest ar

1. **State the problem:** We have votes from students for three faculty members: Ms. Luz (60 votes), Mr. Henry (25 votes), and Ms. Lina (35 votes). We need to find: a. The total nu

1. **Problem Statement:** Dona conducted a survey among 140 Grade 7 students about their preferred Student Government presidents. The percentages for each candidate are given, and

1. **Stating the problem:** We have a frequency distribution table with categories Male and Female, their frequencies, and we need to find the relative frequencies and percentages.

1. **Problem Statement:** Given the quiz scores: 78, 85, 90, 75, 85, 92, 95, 85, 80, 70, compute the mean, median, mode, range, variance, and standard deviation. 2. **Mean (Average

1. **Question One: Travel Time Analysis** We are given travel times of 90 members of parliament and asked to:

1. **Problem Statement:** Given the scores of the top 20 students in a 50-item statistics test: 27, 30, 45, 47, 50, 38, 29, 42, 31, 46, 48, 43, 38, 49, 38, 35, 37, 32, 44, 40.

1. **State the problem:** We want to use the Scheffe test to compare pairs of group means from an ANOVA with three groups: A (No sleep apnea), B (Untreated sleep apnea), and C (Tre

1. **State the problem:** We want to use the Scheffe test to compare pairs of group means from three groups (A: no sleep apnea, B: untreated sleep apnea, C: treated sleep apnea) af